[Question]Kyle goes to basketball practice every day for 2 hours. At practice he spends half of the time shooting and the rest of the time running and weight lifting. If he runs for twice the time he spends weightlifting, how much time in minutes does he spend lifting weight?
[Answer]Half of the 2 - hour practice is for running and weightlifting, so the time for running and weight lifting is 1 / 2 * 2 hours = 1 hour. If the time he lifts weights is x, then the time he runs is 2x. So the time for running and weight lifting is x + 2x = 3x = 1 hour. Thus 3x = 60 minutes. Thus x = 60 / 3 = 20 minutes spent weight lifting. The answer is 20.
Q: A trader made a profit of $960 after a week of sales. To raise $610 to pay for her next shipment of wares, she splits the profit in half and solicits donations from her family and friends. If she received a total donation of $310 and adds it to one-half of her profit, how much money did she make above her goal?
A: She splits her $960 profit in half to get $960 / 2 = $480. She receives a total donation of $310, so she now has $310 + $480 = $790. She needed only $610 so she has $790 - $610 = $180 more than she needs. The answer is 180.
Question: A type C school bus contains 13 rows of seats, with an aisle running down the middle of the bus, splitting each row into two sections. If the school only allowed two students to sit in each section, how many students could be seated on the bus?
Answer: 13 rows, with 2 sections per row would contain 13 * 2 = 26 sections. If two students sat per section, there would be capacity for 26 * 2 = 52 students. The answer is 52.
[Question]Cilia wants to buy a multi-level dumbbell system. The first pair of dumbbells are 3 lb weights, the second pair is 5 lb weights and the third is 8 lb pounds. How much does the entire system weigh?
[Answer]The first pair of weights weighs 3 lb each so all total they weigh 2 * 3 = 6 lbs. The second pair of weights weigh 5 lbs each so they weigh 2 * 5 = 10 lbs. The third pair of weights weigh 8 lbs each so they weigh 2 * 8 = 16lbs. All total, the entire system of weights weigh 6 + 10 + 16 = 32 lbs. The answer is 32.
Q: The price of electricity went up by 25%. John's old computer used 800 watts and his new computer uses 50% more. If the old price of electricity was 12 cents per kilowatt-hour, how much does his computer cost, in dollars, to run for 50 hours?
A: His new computer uses 800 * .5 = 400 watts more than his old computer. So it users 800 + 400 = 1200 watts. That is 1200 / 1000 = 1.2 kw. Electricity cost 12 * .25 = 3 cents more than it used to. So it now cost 12 + 3 = 15 cents per kwh. He used 1.2 * 50 = 60 kwh. So he paid 15 * 60 = 900 cents per kwh. So he paid 900 / 100 = $9. The answer is 9.
Question: A father is buying sand to fill his son's new sandbox, but he is worried that the sand will be too heavy for his car. The sandbox is square, with each side being 40 inches long. If a 30-pound bag of sand is enough to fill 80 square inches of the sandbox to an adequate depth, how many pounds of sand are needed to fill the box completely?
Answer:
The sandbox has an area of 40 * 40 = 1600 square inches. To fill this area, 1600 / 80 = 20 bags of sand are needed. Then, the weight of these bags is 20 * 30 = 600 pounds. The answer is 600.