Question: A laboratory needs flasks, test tubes, and safety gear to carry out its experiments. They were given a $325 budget for the month. They bought $150 worth of flasks, spent two-thirds of that amount on test tubes, and used half of the test tube cost on safety gear. How many dollars of their budget remained?
Answer: The laboratory spent 2 / 3 * 150 = 300 / 3 = $100 on test tubes. They spent a further 100 / 2 = $50 on safety gear. In all, they spent 150 + 100 + 50 = $300. Thus, 325 - 300 = $25 of the laboratory’s budget remained. The answer is 25.

Question: During the hot dog eating contest, the 1st competitor ate 12 hot dogs in 3 minutes. The 2nd competitor ate twice that amount and the 3rd competitor ate 25% less than the 2nd competitor. How many hotdogs did the 3rd competitor eat?
Answer: The 2nd competitor ate twice the amount of the 1st competitor's 12 hot dogs So he ate 2 * 12 = 24 hot dogs. The 3rd competitor ate 25% less than the 2nd's 24 hot dogs, which is 24 / 4 = 6 hot dogs. If the 2nd competitor ate 24 hot dogs, and the 3rd ate 25% less than that, then the 3rd competitor ate 24 - 6 = 18 hot dogs. The answer is 18.

Question: Max can mow the lawn in 40 minutes. If it takes him twice that long to fertilize the lawn, how long will it take him to both mow and fertilize the lawn?
Answer: It takes Max 2 * 40 minutes = 80 minutes to fertilize the lawn. In total, Max takes 80 minutes + 40 minutes = 120 minutes to both mow and fertilize the lawn. The answer is 120.

Question: Bush and Matt are brothers. Bush is younger than Matt by 3 years. This year Bush will be 12 years old. What will be Matt's age 10 years from now?
Answer:
Bush is younger than Matt by 3 years, so if Bush is 12 years old then Matt is 12 + 3 = 15 years old. In 10 years' time, Matt will be 10 + 15 = 25 years old. The answer is 25.