Step-by-step reasoning process: First find the number of marshmallows Jacob needs: 48 graham crackers / 2 graham crackers / marshmallow = 24 marshmallows. Then subtract the number of marshmallows Jacob already has from the number he needs to find the number he needs to buy: 24 marshmallows - 6 marshmallows = 18 marshmallows.
The question and answer:
Question and answer: Jacob is making s'mores. Each s'more takes two graham crackers and one marshmallow. If Jacob has 48 graham crackers and 6 marshmallows, how many more marshmallows does he need to buy?
The answer is 18

Step-by-step reasoning process: The cow provides 16 cups of milk per day and the kids consume 75% so they drink 16 * .75 = 12 cups of milk. The cow provides 16 cups of milk and the kids drink 12 cups leaving 16 - 12 = 4 cups of milk. Daisy uses 50% of the remaining 4 cups of milk to cook with so she uses .50 * 4 = 2 cups of milk. She had 4 cups of milk and used 2 cups to cook with so that leaves 4 - 2 = 2 cups of milk.
The question and answer:
Question and answer: Daisy’s milk cow provides 16 cups of milk per day. 75% of the milk is consumed by Daisy’s kids. Daisy uses 50% of the remaining milk to cook with. How much milk is left over?
The answer is 2

Step-by-step reasoning process: After keeping 15 cards, Rick had 130 cards - 15 cards = 115 cards left. The total number of cards given by Rick to his 8 friends was 8 friends x 12 cards / friend = 96 cards. There were 2 sisters x 3 cards / sister = 6 cards given to Rick's sisters. So, there were 96 cards + 6 cards = 102 cards left after Rick gave Miguel some cards. Therefore, 115 cards - 102 cards = 13 cards were given to Miguel.
The question and answer:
Question and answer:
Rick has 130 cards. He decided to only keep 15 cards and so he gave Miguel some of the cards. Then, he saw 8 friends and decided to give them 12 cards each, and the remaining cards were given equally to his 2 sisters. If each of Rick's sisters got 3 cards, how many cards did Rick give to Miguel?
The answer is 13