A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 30 as remainder. Find the no. is?
Options:
(A) 124345
(B) 234545
(C) 165767
(D) 144656
(E) 220030

(555 + 445) * 2 * 110 + 30 = 220000 + 30 = 220030 So the answer is: (E).

The speed of a boat in still water is 30kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
Options:
(A) kmph
(B) kmph
(C) kmph
(D) kmph
(E) kmph

Speed downstream = 30+ 20 = 50 kmph
Speed upstream = 30 - 20 = 10 kmph So the answer is: (B).

When the price of sugar was increased by 32%, a family reduced its consumption in such a way that the expenditure on sugar was only 10% more than before. If 30 kg were consumed per month before, find the new monthly consumption.
Options:
(A) 20 kg
(B) 25 kg
(C) 30 kg
(D) 35 kg
(E) None of these

Since, expenditure = price consumption
110% of 30 = 132100 new consumption
110100 30 = 132100 new consumption
New consumption = 25 kg So the answer is: (B).

There are different 45 circles. What is the number of the greatest possible points with which the circles intersect?
Options:
(A) 1950
(B) 2000
(C) 1980
(D) 1580
(E) 2600
Maximum points of intersection between n different circles = n*(n - 1) = 45*44 = 1980 So the answer is: (C).