[Question]Mr. Johnson has a prescription with enough pills for 30 days. After four-fifths of the days, he has 12 pills left. How many pills is Mr. Johnson supposed to take a day if he takes the same dose daily?
[Answer]Mr. Johnson has been taking the pills for 30 * 4 / 5 = 24 days. He has 30 - 24 = 6 days left to finish the pills. Thus, Mr. Johnson is supposed to take 12 / 6 = 2 pills a day. The answer is 2.

[Question]The city’s bus system carries 1,200,000 people each day. How many people does the bus system carry for 13 weeks?
[Answer]13 weeks have 13 * 7 = 91 days. For 91 days the bus system carries 1,200,000 * 91 = 109,200,000 people. The answer is 109200000.

[Question]John drinks 2 energy drinks. 1 of them is a 12-ounce drink with 250 grams of caffeine. The second drink is 3 times more caffeinated per ounce but only 2 ounces. He then takes a caffeine pill that has as much caffeine as his 2 drinks combined. How much caffeine did he consume?
[Answer]The second drink was 2 / 12 = 1 / 6 the size of the first drink. So it had 1 / 6 * 3 = 1 / 2 the caffeine. That means it had 1 / 2 * 250 = 125 grams of caffeine. So the total amount of caffeine he drank was 125 + 250 = 375 grams. So he consumed 375 * 2 = 750 grams of caffeine for the day. The answer is 750.

[Question]Andy and Dawn spent the weekend cleaning the house. When putting away the laundry Andy took six minutes more than two times the number of minutes it took Dawn to wash the dishes. If it took Dawn 20 minutes to wash the dishes how many minutes did it take Andy to put away the laundry?
[Answer]
Two times the minutes it took Dawn to wash the dishes is 20 * 2 = 40. Andy took 40 + 6 = 46 minutes to put away the laundry. The answer is 46.