Question: Jimmy and Tonya both like collecting matchbooks and stamps. Tonya and Jimmy decide to trade some stamps and matchbooks. They have each decided that one stamp is worth 12 matches. Each matchbook contains 24 matches. If Tonya arrives with 13 stamps, Jimmy has 5 matchbooks, and Jimmy trades all his matchbooks for stamps, how many stamps does Tonya have left?
Answer: Jimmy has 120 matches because 5 times 24 equals 120. Jimmy trades this for 10 stamps because 120 divided by 12 equals 10. Tonya has 3 stamps left because 13 minus 10 equals 3. The answer is 3.

Question: Donny has $78 in his piggy bank. If Donny buys a kite for $8 and a frisbee for $9. How much money does Donny have left?
Answer: Donny has 78 - 8 = 70 after paying for the kite. He has 70 - 9 = $61 left after buying the frisbee as well as the kite. The answer is 61.

Question: Wyatt's mother gave him $74 to go to the store. Wyatt bought 5 loaves of bread and 4 cartons of orange juice. Each loaf of bread cost $5 and each carton of orange juice cost $2. How much money does Wyatt have left?
Answer: The loaves of bread cost 5 * $5 = $25. The orange juice cost 4 * $2 = $8. Wyatt’s total cost is $25 + $8 = $33. Wyatt is left with the initial $74 - $33 = $41. The answer is 41.

Question: Edward the plumber is replacing a pipe in a bathroom wall. He needs to use 40 feet of copper pipe to complete the job. For every 5 feet of pipe, Edward must use one tightening bolt, and for every bolt, he uses two washers. He buys a bag of 20 washers for the job. After he completes the bathroom job, how many washers will be remaining in the bag?
Answer:
If Edward needs to use 1 bolt per every five feet of piping, then for a job requiring 40 - feet of piping, he will use 40 / 5 = 8 tightening bolts. If for every 1 bolt he uses two washers, then he will need 8 * 2 = 16 washers to complete the job. if he buys a bag containing 20 washers, and removes 16, he will have 20 - 16 = 4 washers remaining in the bag. The answer is 4.