John pays for a candy bar with 4 quarters, 3 dimes, and a nickel. He got 4 cents back in change. How many cents did the candy bar cost? Give the rationale and then the answer.
Let's think step by step. The quarters came to 4 * 25 = 100 cents. The dimes were worth 3 * 10 = 30 cents. The nickel was 5 * 1 = 5 cents. So he paid 100 + 30 + 5 = 135 cents. Since he got 4 cents as change it cost 135 - 4 = 131 cents.. The answer is: 131.

Philip is a painter. He makes 2 paintings per day. If he already has 20 paintings, how many paintings in total will he have after 30 days? Give the rationale and then the answer.
Let's think step by step. The number of paintings Philip will make after 30 days is 2 paints / day * 30 days = 60 paintings. Then, the total number of his paintings will be 60 paintings + 20 paintings = 80 paintings.. The answer is: 80.

Paityn has 20 red hats and 24 blue hats. Her friend Zola has 4/5 times as many red hats as she has and twice the number of blue hats. If they combine all the hats together and share them equally between themselves, calculate the number of hats each gets. Give the rationale and then the answer.
Let's think step by step. Paityn has a total of 20 hats + 24 hats = 44 hats. The number of red hats that Zola has is 4 / 5 * 20 hats = 16 hats. Zola also has 2 * 24 hats = 48 blue hats. Zola has a total of 48 hats + 16 hats = 64 hats. When they combine their hats, they have 64 hats + 44 hats = 108 hats. If they share the hats equally, each get 108 hats / 2 people = 54 hats / person.. The answer is: 54.