Step-by-step reasoning process: He needs 400 calories worth of peanut butter because 500 - 100 = 400. He needs 2 servings of peanut butter because 400 / 200 = 2.
The question and answer:
Question and answer: Toby is making toast and adding peanut butter to it. He wants to make sure he has 500 calories for breakfast. A piece of bread has 100 calories. A serving of peanut butter has 200 calories. If he has one piece of bread, how many servings of peanut butter should he add?
The answer is 2

Step-by-step reasoning process: She had 8 records, received 12 and bought 30 for a total of 8 + 12 + 30 = 50 records. It takes 2 days to listen to 1 record and she has 50 records it will take her 2 * 50 = 100 days.
The question and answer:
Question and answer: Roberta started off with 8 vinyl records. Her friends gave her 12 records for her birthday and she bought 30 more at a garage sale. It takes her 2 days to listen to 1 record. How many days will it take her to listen to her record collection?
The answer is 100

Step-by-step reasoning process: Roberto skips 70 times per minute because 4,200 / 60 = 70. Together they skip 150 times a minute. They will skip 2,250 times because 150 x 15 = 2,250.
The question and answer:
Question and answer:
Roberto and Valerie are jumping rope at recess. Roberto can skip 4,200 times an hour. Valerie can skip 80 times a minute. If they jump rope for fifteen minutes straight, how many skips will they total?
The answer is 2250