Lots-of-LoRAs/task1422_mathqa_physics huggingface dataset:
Input: Problem: the length of a train and that of a platform are equal . if with a speed of 144 k / hr , the train crosses the platform in one minute , then the length of the train ( in meters ) is ? 
Options: a ) 757 , b ) 758 , c ) 718 , d ) 1200 , e ) 738
Output: d
Input: Problem: for a race a distance of 224 meters can be covered by p in 16 seconds and q in 32 seconds . by what distance does p defeat q eventually ? 
Options: a ) 232 m , b ) 238 m , c ) 224 m , d ) 331 m , e ) 236 m
Output: c
Input: Problem: two trains 131 meters and 165 meters in length respectively are running in opposite directions , one at the rate of 80 km and the other at the rate of 65 kmph . in what time will they be completely clear of each other from the moment they meet ? 
Options: a ) 7.16 , b ) 7.16 , c ) 7.12 , d ) 7.35 , e ) 7.11
Output: d
Input: Problem: a person can swim in still water at 12 km / h . if the speed of water 10 km / h , how many hours will the man take to swim back against the current for 12 km ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7
Output: d
Input: Problem: a factory produces 5500 toys per week . if the workers at this factory work 4 days a week and if these workers make the same number of toys everyday , how many toys are produced each day ? 
Options: a ) 4436 toys , b ) 5487 toys , c ) 6113 toys , d ) 2354 toys , e ) 1375 toys
Output: e
Input: Problem: if the perimeter of a rectangular garden is 600 m , its length when its breadth is 95 m is ? 
Options: ['a ) 286 m', 'b ) 899 m', 'c ) 200 m', 'd ) 205 m', 'e ) 187 m']
Output: d
Input: Problem: find the area of trapezium whose parallel sides are 20 cm and 18 cm long , and the distance between them is 10 cm ? 
Options: a ) 827 cm 2 , b ) 216 cm 2 , c ) 285 cm 2 , d ) 178 cm 2 , e ) 190 cm 2
Output: e
Input: Problem: in a kilometer race , a beats b by 50 meters or 5 seconds . what time does a take to complete the race ? 
Options: a ) 199 sec , b ) 190 sec , c ) 726 sec , d ) 90 sec , e ) 128 sec
Output: d
Input: Problem: a and b can together finish a work in 40 days . they worked together for 10 days and then b left . after another 21 days , a finished the remaining work . in how many days a alone can finish the job ? 
Options: a ) 10 , b ) 25 , c ) 60 , d ) 30 , e ) 28
Output: e
Input: Problem: a and b go around a circular track of length 600 m on a cycle at speeds of 18 kmph and 48 kmph . after how much time will they meet for the first time at the starting point ? 
Options: a ) 120 sec , b ) 176 sec , c ) 360 sec , d ) 187 sec , e ) 189 sec
Output: c
Input: Problem: if a farmer wants to plough a farm field on time , he must plough 120 hectares a day . for technical reasons he ploughed only 85 hectares a day , hence he had to plough 2 more days than he planned and he still has 40 hectares left . what is the area of the farm field and how many days the farmer planned to work initially ? 
Options: a ) 600 , b ) 490 , c ) 720 , d ) 435 , e ) 679
Output: c
Input: Problem: a train 300 m long can cross an electric pole in 30 sec and then find the speed of the train ? 
Options: a ) 76 kmph , b ) 54 kmph , c ) 72 kmph , d ) 36 kmph , e ) 91 kmph
Output: d
Input: Problem: a train traveling at 72 kmph crosses a platform in 34 seconds and a man standing on the platform in 18 seconds . what is the length of the platform in meters ? 
Options: a ) 240 meters , b ) 320 meters , c ) 420 meters , d ) 600 meters , e ) can not be determined
Output: b
Input: Problem: a train is 460 meter long is running at a speed of 45 km / hour . in what time will it pass a bridge of 140 meter length ? 
Options: a ) 76 seconds , b ) 18 seconds , c ) 40 seconds , d ) 48 seconds , e ) 45 seconds
Output: d
Input: Problem: a certain car can travel 40 kilometers on a liter of fuel . if the fuel tank ’ s contents decrease by 3.9 gallons over a period of 5.7 hours as the car moves at a constant speed , how fast is the car moving , in miles per hour ? ( 1 gallon = 3.8 liters ; 1 mile = 1.6 kilometers ) 
Options: a ) 52 , b ) 65 , c ) 78 , d ) 91 , e ) 104
Output: b
Input: Problem: a cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.4 m and its walls are 5 cm thick . the thickness of the bottom is : 
Options: a ) 90 cm , b ) 4 dm , c ) 1 m , d ) 1.1 cm , e ) none of these
Output: b
Input: Problem: the speed of a boat in still water in 30 km / hr and the rate of current is 7 km / hr . the distance travelled downstream in 36 minutes is : 
Options: a ) 18.4 km , b ) 20.6 km , c ) 21.4 km , d ) 1111 km , e ) 22.2 km
Output: e
Input: Problem: ronald and elan are working on an assignment . ronald takes 6 hours to type 32 pages on a computer , while elan takes 5 hours to type 40 pages . how much time will they take , working together on two different computers to type an assignment of 110 pages ? 
Options: a ) 3 hours , b ) 6 hours , c ) 4 hours , d ) 8 hours , e ) 10 hours
Output: d
Input: Problem: miller street begins at baker street and runs directly east for 4.5 kilometers until it ends when it meets turner street . miller street is intersected every 250 meters by a perpendicular street , and each of those streets other than baker street and turner street is given a number beginning at 1 st street ( one block east of baker street ) and continuing consecutively ( 2 nd street , 3 rd street , etc . . . ) until the highest - numbered street one block west of turner street . what is the highest - numbered street that intersects miller street ? 
Options: a ) 15 th , b ) 16 th , c ) 17 th , d ) 18 th , e ) 19 th
Output: c
Input: Problem: a , b and c completed a piece of work , a worked for 6 days , b for 9 days and c for 4 days . their daily wages were in the ratio of 3 : 4 : 5 . find the daily wages of c , if their total earning was rs . 1702 ? 
Options: a ) s . 109 , b ) s . 115 , c ) s . 100 , d ) s . 103 , e ) s . 102
Output: b
Input: Problem: x can finish a work in 24 days . y can finish the same work in 16 days . yworked for 10 days and left the job . how many days does x alone need to finish the remaining work ? 
Options: a ) 3 , b ) 5 , c ) 6 , d ) 8 , e ) 9
Output: e
Input: Problem: the speed of a car increases by 2 kms after every one hour . if the distance travelling in the first one hour was 35 kms . what was the total distance travelled in 12 hours ? 
Options: a ) 456 kms , b ) 482 kms , c ) 552 kms , d ) 556 kms , e ) none of these
Output: c
Input: Problem: the center of a circle lies on the origin of the coordinate plane . if a point ( x , y ) is randomly selected inside of the circle , what is the probability that y > x or x < 0 ? 
Options: a ) 5 / 8 , b ) 4 / 5 , c ) 3 / 8 , d ) 1 / 2 , e ) 3 / 4
Output: a
Input: Problem: there is rain at a rate of 12 centimeters per hour all over new jersey . somewhere downtown in new jersey a group of students are waiting for the rain to stop . if the rain filled a tank the with a base area of 250 square centimeters and a depth of 6 centimeters , how long did the students wait for the rain to stop ? 
Options: ['a ) 8 hours', 'b ) 4 hours 25 minutes', 'c ) 3 hours 15 minutes', 'd ) 6 hours', 'e ) 2 hours']
Output: e
Input: Problem: a and b together can do a piece of work in 2 days . if a alone can do the same work in 22 days , then b alone can do the same work in ? 
Options: a ) 0.35 days , b ) 0.45 days , c ) 0.55 days , d ) 0.25 days , e ) 0.15 days
Output: b
Input: Problem: the cross - section of a stream is a trapezium in shape . if the stream is 10 m wide at the top and the area of cross - section is 640 sq m , the depth of stream is 80 m and width at the bottom is ? 
Options: a ) 2 m , b ) 6 m , c ) 4 m , d ) 8 m , e ) 9 m
Output: b
Input: Problem: a train 360 m long runs with a speed of 45 km / hr . what time will it take to pass a platform of 190 m long ? 
Options: a ) 38 sec , b ) 35 sec , c ) 44 sec , d ) 40 sec , e ) 50 sec
Output: c
Input: Problem: ravi covers a distance of 900 mtrs in 180 secs . find his speed in kmph ? 
Options: a ) 10 kmph , b ) 18 kmph , c ) 20 kmph , d ) 26 kmph , e ) 28 kmph
Output: b
Input: Problem: car a runs at the speed of 52 km / hr & reaches its destination in 10 hr . car b runs at the speed of 46 km / h & reaches its destination in 8 h . what is the respective ratio of distances covered by car a & car b ? 
Options: a ) 62 : 25 , b ) 66 : 52 , c ) 68 : 15 , d ) 65 : 41 , e ) 23 : 59
Output: d
Input: Problem: two good train each 500 m long , are running in opposite directions on parallel tracks . their speeds are 45 km / hr and 30 km / hr respectively . find the time taken by the slower train to pass the driver of the faster one . 
Options: a ) 12 sec , b ) 24 sec , c ) 48 sec , d ) 60 sec , e ) none
Output: c
Input: Problem: if 34 men do a work in 40 days , in how many days will 20 men do it ? 
Options: a ) 65 , b ) 68 , c ) 61 , d ) 55 , e ) 74
Output: b
Input: Problem: a room 14 m 21 cm long and 7 m 77 cm broad is to be paved with square tiles . find the least number of square tiles required to cover the floor . 
Options: a ) 22636 , b ) 22640 , c ) 22647 , d ) 22533 , e ) 22675
Output: d
Input: Problem: a leak in the bottom of a tank can empty the full tank in 9 hours . an inlet pipe fills water at the rate of 6 litres a minute . when the tank is full , the inlet is opened and due to the leak , the tank is empty in 12 hours . how many litres does the cistern hold ? 
Options: a ) 7580 , b ) 12960 , c ) 8290 , d ) 8640 , e ) none
Output: b
Input: Problem: a man can row 6 kmph in still water . when the river is running at 2 kmph , it takes him 1 hour to row to a place and black . what is the total distance traveled by the man ? 
Options: a ) 5.32 , b ) 5.7 , c ) 5.76 , d ) 5.74 , e ) 5.71
Output: a
Input: Problem: when a train travels at a speed of 80 kmph , it reaches the destination on time . when the same train travels at a speed of 50 kmph , it reaches its destination 15 min late . what is the length of journey ? 
Options: a ) 25 km , b ) 50 km , c ) 60 km , d ) 85 km , e ) 95 km
Output: a
Input: Problem: what decimal fraction is 30 ml of a litre ? 
Options: a ) . 3 , b ) . 0003 , c ) . 003 , d ) 0.03 , e ) none of these
Output: d
Input: Problem: circular gears p and q start rotating at the same time at constant speeds . gear p makes 10 revolutions per minute and gear q makes 40 revolutions per minute . how many seconds after the gears start rotating will gear q have made exactly 15 more revolutions than gear p ? 
Options: a ) 12 , b ) 15 , c ) 20 , d ) 24 , e ) 30
Output: e
Input: Problem: 300 metres long yard , 26 trees are palnted at equal distances , one tree being at each end of the yard . what is the distance between 2 consecutive trees 
Options: a ) 10 , b ) 12 , c ) 14 , d ) 16 , e ) 18
Output: b
Input: Problem: a train running at the speed of 90 km / hr crosses a pole in 5 seconds . find the length of the train . 
Options: a ) 150 meter , b ) 145 meter , c ) 140 meter , d ) 125 meter , e ) none of these
Output: d
Input: Problem: a can do a work in 8 days . b can do the same work in 16 days . if both a & b are working together in how many days they will finish the work ? 
Options: a ) 3 days , b ) 16 / 3 days , c ) 3 / 4 days , d ) 9 / 12 days , e ) 5 / 7 days
Output: b
Input: Problem: a and b undertake to do a piece of work for rs . 600 . a alone can do it in 6 days while b alone can do it in 8 days . with the help of c , they finish it in 3 days . find the share of a 
Options: a ) 300 , b ) 450 , c ) 750 , d ) 800 , e ) none of them
Output: a
Input: Problem: a cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 8 hours . if both the taps are opened simultaneously , then after how much time will the cistern get filled ? 
Options: a ) 7.5 , b ) 7.4 , c ) 7.9 , d ) 7.2 , e ) 8.0
Output: e
Input: Problem: a group of men decided to do a work in 8 days , but 3 of them became absent . if the rest of the group did the work in 10 days , find the original number of men ? 
Options: a ) 15 , b ) 20 , c ) 30 , d ) 25 , e ) 18
Output: a
Input: Problem: two trains each 190 m in length each , are running on two parallel lines in opposite directions . if one goes at the speed of 65 km / h while the other travels at 50 km / h . how long will it take for them to pass each other completely . 
Options: a ) 10.7 sec , b ) 2.7 sec , c ) 11.9 sec , d ) 12.7 sec , e ) 25.7 sec
Output: c
Input: Problem: the length of the bridge , which a train 180 metres long and travelling at 45 km / hr can cross in 30 seconds , is ? 
Options: a ) 876 m , b ) 157 m , c ) 195 m , d ) 156 m , e ) 167 m
Output: c
Input: Problem: a 600 meter long train crosses a signal post in 40 seconds . how long will it take to cross a 1.8 kilometer long bridge , at the same speed ? 
Options: a ) 4 min , b ) 2 min , c ) 8 min , d ) 9 min , e ) 3 min
Output: b
Input: Problem: a reindeer chased by a cheetah passed a certain tree at a constant speed of 50 miles per hour while being chased by a cheetah . then , 2 minutes later , the cheetah passed the same tree at a constant speed of 60 miles per hour . if both animals maintained their speeds , how long after the cheetah passed the tree did the cheetah catch up with the reindeer ? 
Options: a ) 30 min , b ) 45 min , c ) 1 hr , d ) 3 min , e ) 1 min
Output: d
Input: Problem: a person can row at 10 kmph in still water . if the velocity of the current is 2 kmph and it takes him 15 hour to row to a place and come back , how far is the place ? 
Options: a ) 24 km , b ) 30 km , c ) 48 km , d ) 72 km , e ) 15 km
Output: d
Input: Problem: sari and ken climb up a mountain . at night , they camp together . on the day they are supposed to reach the summit , sari wakes up at 05 : 00 and starts climbing at a constant pace . ken starts climbing only at 07 : 00 , when sari is already 700 meters ahead of him . nevertheless , ken climbs at a constant pace of 500 meters per hour , and reaches the summit before sari . if sari is 50 meters behind ken when he reaches the summit , at what time did ken reach the summit ? 
Options: a ) 13 : 00 , b ) 13 : 30 , c ) 14 : 00 , d ) 15 : 00 , e ) 12 : 00
Output: e
Input: Problem: a train 250 m long running at 72 kmph crosses a platform in 15 sec . what is the length of the platform ? 
Options: a ) 50 m , b ) 200 m , c ) 250 m , d ) 270 m , e ) 300 m
Output: a
Input: Problem: p can do a work in the same time in which q and r together can do it . if p and q work together , the work can be completed in 10 days . r alone needs 15 days to complete the same work . then q alone can do it in 
Options: a ) 20 , b ) 22 , c ) 25 , d ) 27 , e ) 60
Output: e
Input: Problem: a group of men decided to do a work in 12 days , but 6 of them became absent . if the rest of the group did the work in 14 days , find the original number of men ? 
Options: a ) 15 , b ) 42 , c ) 44 , d ) 45 , e ) 18
Output: b
Input: Problem: car x began traveling at an average speed of 35 miles per hour . after 72 minutes , car y began traveling at an average speed of 65 miles per hour . when both cars had traveled the same distance , both cars stopped . how many miles did car x travel from the time car y began traveling until both cars stopped ? 
Options: a ) 15 , b ) 20 , c ) 40 , d ) 47 , e ) 49
Output: e
Input: Problem: along a yard 273 metres long , 14 trees are palnted at equal distances , one tree being at each end of the yard . what is the distance between two consecutive trees 
Options: a ) 18 , b ) 19 , c ) 10 , d ) 21 , e ) 12
Output: d
Input: Problem: the cyclist going at a constant rate of 18 miles per hour is passed by a motor - cyclist traveling in the same direction along the same path at 48 miles per hour . the motor - cyclist stops to wait for the cyclist 15 minutes after passing cyclist , while the cyclist continues to travel at constant rate , how many minutes must the motor - cyclist wait until the cyclist catches up ? 
Options: a ) 25 , b ) 30 , c ) 35 , d ) 40 , e ) 45
Output: a
Input: Problem: car x began traveling at an average speed of 35 miles per hour . after 72 minutes , car y began traveling at an average speed of 49 miles per hour . when both cars had traveled the same distance , both cars stopped . how many miles did car x travel from the time car y began traveling until both cars stopped ? 
Options: a ) 105 , b ) 120 , c ) 140 , d ) 147 , e ) 168
Output: a
Input: Problem: a person can row at 10 kmph in still water . if the velocity of the current is 2 kmph and it takes him 20 hour to row to a place and come back , how far is the place ? 
Options: a ) 24 km , b ) 30 km , c ) 96 km , d ) 12 km , e ) 15 km
Output: c
Input: Problem: two trains are moving in the same direction at 72 kmph and 36 kmph . the faster train crosses a man in the slower train in 7 seconds . find the length of the faster train ? 
Options: a ) 70 , b ) 20 , c ) 30 , d ) 75 , e ) 15
Output: a
Input: Problem: on a map the distance between two mountains is 312 inches . the actual distance between the mountains is 136 km . ram is camped at a location that on the map is 25 inch from the base of the mountain . how many km is he from the base of the mountain ? 
Options: a ) 10.89 , b ) 14.81 , c ) 14.8 , d ) 14.82 , e ) 14.12
Output: a
Input: Problem: two trains , a and b , started simultaneously from opposite ends of a 75 - mile route and traveled toward each other on parallel tracks . train a , traveling at a constant rate , completed the 75 - mile trip in 3 hours ; train b , traveling at a constant rate , completed the 75 - mile trip in 2 hours . how many miles had train a traveled when it met train b ? 
Options: a ) 20 , b ) 22.5 , c ) 30 , d ) 37.5 , e ) 45
Output: c
Input: Problem: a toy train produces at least 10 different tunes when it moves around a circular toy track of radius 5 meters , at 10 meters per minute . however , the toy train is defective and it now produces only two different tunes at random . what is the probability that the toy train produces 3 music tunes of the same type ( 1 in _____ ) ? 
Options: a ) 3 , b ) 9 , c ) 8 , d ) 4 , e ) 5
Output: d
Input: Problem: a flagpole 18 meters high casts a shadow of length 45 meters . if a building under similar conditions casts a shadow of length 55 meters , what is the height of the building ( in meters ) ? 
Options: a ) 20 , b ) 22 , c ) 24 , d ) 26 , e ) 28
Output: b
Input: Problem: a can finish a piece of work in 5 days . b can do it in 25 days . they work together for four days and then a goes away . in how many days will b finish the work ? 
Options: a ) 3 days , b ) 1 day , c ) 2 days , d ) 4 days , e ) 5 days
Output: b
Input: Problem: a train running at the speed of 60 km / hr crosses a pole in 5 seconds . find the length of the train . 
Options: a ) 83.33 , b ) 882 , c ) 772 , d ) 252 , e ) 121
Output: a
Input: Problem: a can do a particular work in 6 days . b can do the same work in 8 days . a and b signed to do it for rs . 2400 . they completed the work in 3 days with the help of c . how much is to be paid to c ? 
Options: a ) s . 300 , b ) s . 600 , c ) s . 420 , d ) s . 400 , e ) s . 480
Output: a
Input: Problem: jerry travels 8 miles at an average speed of 40 miles per hour , stops for 11 minutes , and then travels another 20 miles at an average speed of 60 miles per hour . what is jerry ’ s average speed , in miles per hour , for this trip ? 
Options: a ) 37 , b ) 42.5 , c ) 44 , d ) 50 , e ) 52.5
Output: a
Input: Problem: what is the length of a bridge ( in meters ) , which a train 156 meters long and travelling at 45 km / h can cross in 30 seconds ? 
Options: a ) 203 , b ) 211 , c ) 219 , d ) 227 , e ) 235
Output: c
Input: Problem: if a man earns rs 20 on first day and spends rs 15 on second day , and earns rs 20 on third day and spends rs 15 on fourth day and goes on on which day he will be having rs 60 . 
Options: a ) 40 rs , b ) 45 rs , c ) 50 rs , d ) 55 rs , e ) 60 rs
Output: e
Input: Problem: a train passes a station platform in 20 sec and a man standing on the platform in 12 sec . if the speed of the train is 72 km / hr . what is the length of the platform ? 
Options: a ) 227 , b ) 140 , c ) 160 , d ) 120 , e ) 171
Output: c
Input: Problem: a cistern which could be filled in 4 hours takes one hour more to be filled owing to a leak in its bottom . if the cistern is full in what time will the leak empty it ? 
Options: a ) 76 hrs , b ) 99 hrs , c ) 55 hrs , d ) 20 / 3 hrs , e ) 11 hrs
Output: d
Input: Problem: dean winchester has got a long wooden stock of size 60 feet , he need to cut small stock of size 1 feet long using his axe . he takes 5 minutes to cut one small stock ( 1 feet ) , how long will he take to make 60 such small stocks ? 
Options: a ) 296 minutes . , b ) 297 minutes . , c ) 295 minutes . , d ) 294 minutes . , e ) none
Output: c
Input: Problem: two pipes a and b can fill a tank in 6 hours and 4 hours respectively . if they are opened on alternate hours and if pipe a is opened first , in how many hours , the tank shall be full ? 
Options: a ) 2 hrs , b ) 4 hrs , c ) 5 hrs , d ) 6 hrs , e ) 7 hrs
Output: c
Input: Problem: in a 500 m race , the ratio of the speeds of two contestants a and b is 3 : 4 . a has a start of 170 m . then , a wins by : 
Options: a ) 60 m , b ) 20 m , c ) 43 m , d ) 20 m , e ) 23 m
Output: a
Input: Problem: tanks a and b are each in the shape of a right circular cylinder . the interior of tank a has a height of 10 meters and a circumference of 11 meters , and the interior of tank b has a height of 11 meters and a circumference of 10 meters . the capacity of tank a is what percent of the capacity of tank b ? 
Options: a ) 75 % , b ) 80 % , c ) 100 % , d ) 110 % , e ) 125 %
Output: d
Input: Problem: a can complete a project in 20 days and b can complete the same project in 30 days . if a and b start working on the project together and b quits 5 days before the project is completed , in how many days total will the project be completed ? 
Options: a ) 10 , b ) 12 , c ) 14 , d ) 16 , e ) 18
Output: c
Input: Problem: two trains are moving in the same direction at 162 kmph and 18 kmph . the faster train crosses a man in the slower train in 33 seconds . find the length of the faster train ? 
Options: a ) 1300 , b ) 1310 , c ) 1320 , d ) 1330 , e ) 1340
Output: c
Input: Problem: 19 men take 21 days of 8 hours each to do a piece of work . how many days of 6 hours each would 21 women take to do the same . if 3 women do as much work as 2 men ? 
Options: a ) 32 , b ) 87 , c ) 38 , d ) 99 , e ) 77
Output: c
Input: Problem: two mechanics were working on your car . one can complete the given job in six hours , but the new guy takes 10 hours . they worked together for the first two hours , but then the first guy left to help another mechanic on a different job . how long will it take the new guy to finish your car ? 
Options: a ) 7 / 4 , b ) 4 / 3 , c ) 15 / 4 , d ) 56 / 15 , e ) 17 / 5
Output: d
Input: Problem: a cistern 4 meters long and 4 meters wide contains water up to a depth of 1 meter 25 cm . what is the total area of the wet surface ? 
Options: a ) 28 , b ) 32 , c ) 36 , d ) 40 , e ) 44
Output: c
Input: Problem: a honey bee flies for 10 seconds , from a daisy to a rose . it immediately continues to a poppy , flying for 6 additional seconds . the distance the bee passed , flying from the daisy to the rose is 14 meters longer than the distance it passed flying from the rose to the poppy . the bee flies to the poppy at 3 meters per second faster than her speed flying to the rose . the bee flies how many meters per second from the daisy to the rose ? 
Options: a ) 2 , b ) 5 , c ) 6 , d ) 8 , e ) 10
Output: a
Input: Problem: a and b can finish a work in 12 days while a alone can do the same work in 20 days . in how many days b alone will complete the work ? 
Options: a ) 76 days , b ) 30 days , c ) 98 days , d ) 31 days , e ) 22 days
Output: b
Input: Problem: a cistern can be filled by a tap in 5 hours while it can be emptied by another tap in 10 hours . if both the taps are opened simultaneously then after how much time will the cistern get filled ? 
Options: a ) 20 hr , b ) 10 hr , c ) 5 hr , d ) 4 hr , e ) 15 hr
Output: b