Step-by-step reasoning process: Each pile has 10 coins, so he has:. 10 * 4 * $.25 = $10.00 worth of quarters,. 10 * 6 * $.10 = $6.00 worth of dimes,. 10 * 9 * $.05 = $4.50 worth of nickels, and. 10 * 5 * $.01 = $0.50 worth of pennies. Altogether he has $10.00 + $6.00 + $4.50 + $0.50 = $21.00.
The question and answer:
Question and answer: Rocco stores his coins in piles of 10 coins each. He has 4 piles of quarters, 6 piles of dimes, 9 piles of nickels, and 5 piles of pennies. How much money does Rocco have?
The answer is 21

Step-by-step reasoning process: In order for everyone to have seconds, Luther must make 8 x 2 = 16 pancakes. Luther must make another 16 - 12 = 4 pancakes.
The question and answer:
Question and answer: Luther made 12 pancakes for breakfast. His family has 8 people. How many more pancakes must he make for everyone to have a second pancake?
The answer is 4

Step-by-step reasoning process: Henry and Paul collected a total of 11 + 24 = 35 seashells. To make a total of 59, Leo must have collected 59 - 35 = 24 seashells. He gave out a quarter of 24 seashells which is 24 * (1 / 4) = 6 seashells. They are now left with 59 - 6 = 53 seashells.
The question and answer:
Question and answer:
Henry, John and Leo collected some seashells from the beach. Henry collected 11, Paul 24. If they initially collected 59 seashells in total and Leo gave a quarter of his collection to a younger kid they met, how many do they have in total now?
The answer is 53