Question: Care and Rick have a repair shop. Each repair is priced differently: phone repair costs $11, laptop repair costs $15 and computer repair costs $18. If they perform 5 phone repairs, 2 laptop repairs, and 2 computer repairs for this week, how much did they earn for the week?
Answer: They earned $11 x 5 = $55 for the phone repairs. They earned $15 x 2 = $30 for the laptop repairs. They also earned $18 x 2 = $36 for computer repairs. Therefore, Care and Rick earned $55 + $30 + $36 = $121 for the week. The answer is 121.
[Question]Donald went to a computer store. He saw a 15% reduction in the price of the laptop he wants to buy. If the laptop originally costs $800, how much will he pay for the laptop?
[Answer]There was $800 x 15 / 100 = $120. Thus, Donald will pay $800 - $120 = $680. The answer is 680.
Q: A farmer is growing corn. For every 4 seeds he plants, he gets one ear of corn, that he can sell for $.1. It costs $.5 for a bag with 100 seeds. If he makes $40 in profit, how many ears did he sell?
A: A single seed costs $.005 because .5 / 100 = .005. It costs $.02 cents to grow an ear of corn because .005 x 4 = .02. On each ear of corn he makes $.098 profit because .1 - .02 = .08. He sold 500 ears because 40 / .08 = 500. The answer is 500.
Question: If a circle has a radius of 14 feet, how many 6-inch pencils can be placed end-to-end across the diameter of the circle?
Answer: A circle with a radius of 14 feet has a diameter of 2 * 14 = 28 feet. A six - inch pencil is 6 / 12 = 0.5 feet long. Thus, across a 28 - foot diameter, one can place 28 / 0.5 = 56 6 - inch pencils. The answer is 56.
[Question]Jack leaves his bathtub's faucet dripping at a rate of 40 ml/minute. Water evaporates from the bathtub at a rate of 200 ml/hour. If he leaves the water running for 9 hours, then dumps out 12 liters, how many milliliters of water are left in the bathtub?
[Answer]First find how much water fills the bathtub per hour: 40 ml / minute * 60 minutes / hour = 2400 ml / hour. Then subtract the water that evaporates to find the total amount of water added per hour: 2400 ml / hour - 200 ml / hour = 2200 ml / hour. Then multiply that amount by the number of hours to find the total amount of water in the tub: 2200 ml / hour * 9 hours = 19800 ml. Then find the number of milliliters in 12 liters: 12 liters * 1000 ml / liter = 12000 ml. Then subtract the water Jack removes from the total amount of water to find the remaining amount of water: 19800 ml - 12000 ml = 7800 ml. The answer is 7800.
[Question]Madison takes her dog to the dog park. Counting Madison's dog, half the dogs have spots and 1/5 have pointy ears. If 15 dogs have spots, how many have pointy ears?
[Answer]
First double the number of dogs with spots to find the total number of dogs: 15 dogs * 2 = 30 dogs. Then multiply that number by 1 / 5 to find the number that have pointy ears: 30 dogs * 1 / 5 = 6 dogs. The answer is 6.