Question: Tommy is making 12 loaves of bread. He needs 4 pounds of flour per loaf. A 10-pound bag of flour costs $10 and a 12-pound bag costs $13. When he is done making his bread, he has no use for flour and so he will throw away whatever is left. How much does he spend on flour if he buys the cheapest flour to get enough?
Answer: He needs 48 pounds of flour because 12 x 4 = 48. He needs 4.8 bags of 10 pound bags because 48 / 10 = 4.8. He therefore needs to buy 5 bags of flour because 4 < 4.8 < 5. He spends $50 if he buys this flour because 5 x 10 = 50. He needs 4 bags of the 12 - pound flour because 48 / 12 = 4. He would spend $52 on the 12 - pound bags because 4 x 13 = 52. He spends $50 if he buys the cheapest flour because 50 < 52. The answer is 50.

Question: Carly is trying to get in shape to try out for the soccer team. She starts by running 2 miles a week. The second week, she runs twice as long plus 3 extra miles per week. The third week she runs 9/7 as much as she ran the second week. The week after that, she sprains her ankle and has to reduce her running time by 5 miles per week. How many miles did she run the week she was injured?
Answer: First find how long Carly runs the second week: 2 miles * 2 + 3 = 7 miles. Then find how long she runs in the third week: 9 / 7 * 7 miles = 9 miles. Then subtract the 5 miles reduction from when she was injured: 9 miles - 5 miles = 4 miles. The answer is 4.

Question: Tania has five baskets containing a total of 58 fruits. There are 18 mangoes in one basket, 10 pears in another, 12 pawpaws in another and the last 2 contain the same number of kiwi and lemon respectively, how many lemons are there?
Answer: The sum of mangoes, pears and pawpaws is 18 + 10 + 12 = 40. The total number of fruits is 58 so the last two baskets contain 58 - 40 = 18 fruits. Each of the last two baskets contains an equal amount of fruits which is 18 / 2 = 9 fruits. The answer is 9.

Question: There are 14 red crayons, 5 more blue crayons than red crayons, and 6 less yellow crayons than double the blue crayons. How many yellow crayons are there?
Answer:
Red:14 crayons. Blue:5 + 14 = 19 crayons. Yellow:19(2) - 6 = 32 crayons. The answer is 32.