Henry drinks 15 bottles of kombucha every month. Each bottle costs $3.00 and is eligible for a cash refund of $0.10 per bottle when he takes it to a recycling center. After 1 year, how many bottles of kombucha will he be able to buy after he receives his cash refund?
Let's think: He drinks 15 bottles every month and there are 12 months in 1 year so that's 15 * 12 = 180 bottles. He earns $0.10 on every bottle that he recycles so that's .10 * 180 = $18.00. He has $18.00 and each bottle costs $3.00 so he can buy 18 / 3 = 6 bottles.. The answer is: 6.

A group of 300 athletes spent Saturday night at Ultimate Fitness Camp. The next morning, for 4 hours straight, they left the camp at a rate of 28 athletes per hour. Over the next 7 hours, a new group of athletes trickled into the camp at a rate of 15 athletes per hour. Immediately thereafter, the camp gate was shut and everyone went to bed. What is the difference in the total number of athletes in the camp over the two nights?
Let's think: The number that left the camp on Saturday morning was 4 * 28 = 112 athletes. This means that in the camp there remained 300 - 112 = 188 athletes. The new group trickling in on Sunday morning comprised 7 * 15 = 105 athletes. The number that slept at the camp on Sunday night is therefore 188 + 105 = 293 athletes. Since there were 300 athletes on Saturday night, the difference is 300 - 293 = 7 athletes.. The answer is: 7.

Adam goes to school every day. On Monday he had 6 lessons of 30 minutes each, and on Tuesday he had 3 lessons of 1 hour each. On Wednesday, Adam spent twice as much time at school as on Tuesday. How much time in total did Adam spend at school during these 3 days, in hours?
Let's think: On Monday Adam had 6 * 30 = 180 minutes of lessons, which is 3 hours. On Wednesday Adam spent twice as much time at school as on Tuesday, so he spent 2 * 3 = 6 hours at school. This means that during these three days Adam spent at school 3 + 3 + 6 = 12 hours.. The answer is: 12.

In order to train for his fights Rocky would run 4 miles on day one of training. Rocky would double the miles for day 2, and triple the miles from day 2 for day 3. How many miles did Rocky run in the first three days of training?
Let's think:
Day 1:4. Day 2:2(4) = 8. Day 3:8(3) = 24. Total:4 + 8 + 24 = 36 miles.. The answer is: 36.