Q: John can play 200 beats per minute. If he plays 2 hours a day for 3 days how many beats does he play?
A: He trains 2 * 60 = 120 minutes a day. That means he played 200 * 120 = 24000 beats per day. So he played 24000 * 3 = 72000 beats. The answer is 72000.
Question: Billy has $25 less than twice the money Sam has. If Sam has $75, how much money do they have together?
Answer: Billy has $25 less than twice Sam's money, or 2 * $75 - $25 = $150 - $25 = $125. Together they have $75 + $125 = $200. The answer is 200.
[Question]Aaron is gathering can lids to take to the recycling center. He uses 3 equal-sized boxes of canned tomatoes and adds the lids he gets to the 14 can lids he already has. He is now taking 53 can lids to the recycling center. How many cans lids did he get from each box?
[Answer]Calculating the difference between the can lids Aaron has now and the amount that he had initially shows there were 53 14 = 39 can lids in the boxes of canned tomatoes. As the boxes are the same size, splitting these can lids equally shows that there were 39 / 3 = 13 can lids in each box. The answer is 13.
Q: If you double a number and add 5 to the result, then that's 20 more than half of the original number. What's the original number?
A: Let x be the original number. 2 * x + 5 = 20 + x / 2. 2 * x - x / 2 = 15. 4 * x - x = 30. 3 * x = 30. x = 10. The answer is 4.
Question: A water tank has a capacity of 4000 gallons. Mack connects a pipe to the tank that fills the tank with water at the rate of 10 gallons per hour. How long will it take to fill the tank to 3/4 of its capacity?
Answer: 3 / 4 of the water tank is 3 / 4 * 4000 = 3000. If the pipe fills the tank with water at the rate of 10 gallons per hour, it will take 3000 / 10 = 300 hours to fill the tank to 3 / 4 of its capacity. The answer is 300.
Q: It takes Matt 2 minutes per problem to do his math homework with a calculator and 5 minutes per problem without a calculator. If Matt's assignment has 20 problems, how much time will using a calculator save?
A:
First find the time difference per problem: 5 minutes / problem - 2 minutes / problem = 3 minutes / problem. Then multiply that number by the number of problems to find the total time difference: 3 minutes / problem * 20 problems = 60 minutes. The answer is 60.