Q: With one mighty blow, Maria cracked open the pinata, and candies spilled all over the floor. There were 40 red candies, 20 less than three times as many yellow candies as red candies, and half as many blue candies as yellow candies. If Carlos ate all of the yellow candies, how many candies remained?
A: Three times the number of red candies is 40 * 3 = 120. So, for yellow candies, there were 20 less than 120 candies, or a total of. 120 - 20 = 100 yellow candies. Half as many blue candies as yellow candies is 100 / 2 = 50 blue candies. If Carlos ate all of the yellow candies, then only the 40 red and 50 blue candies remained for a total of 40 + 50 = 90 candies. The answer is 90.

Q: Hannah is making banana bread. She needs to use 3 cups of flour for every cup of banana mush. It takes 4 bananas to make one cup of mush. If Hannah uses 20 bananas, how many cups of flour should she use?
A: First find the number of cups of banana mush Hannah gets: 20 bananas / 4 bananas / cup = 5 cups. Then multiply the number of cups of mush by the ratio of flour to mush to find the number of cups of flour: 5 cups mush * 3 cups flour / 1 cup mush = 15 cups flour. The answer is 15.

Q: Twice Betty's age is the cost of a pack of nuts. Doug, Betty's friend, is 40 years old. If the sum of their ages is 90, and Betty wants to buy 20 packs of the nuts, calculate the amount of money she'll pay for the packs of nuts.
A:
If Doug, Betty's friend, is 40 years old, and the sum of their ages is 90, Betty is 90 - 40 = 50 years old. Since twice Betty's age is the cost of a pack of nuts, a pack of nuts is sold at 2 * $50 = $100. If Betty wants to buy 20 packs of the nuts, she'll have to pay 20 * $100 = $2000. The answer is 2000.