[Question]: Penelope has 5 M&M candies for every 3 Starbursts candies. If she has 25 M&M candies, how many Starbursts candies does she have?
[Answer]: Let 5 M&M candies and 3 Starbursts candies be referred to as the unit amounts of each candy. 5 M&M candies make one unit so 25 makes 25 / 5 = 5 units of M&M candies. For every unit of 5 M&M candies, there is a corresponding unit of 3 Starbursts candies so for 5 units of M&M, she has 5 units of 3 Starbursts candies which is = 5 * 3 = 15 Starbursts candies.
So the answer is 15.

[Question]: Avery has 20 chickens on his farm. Each chicken lays 6 eggs. He wants to fill up egg cartons with eggs. If each egg carton can hold a dozen (12 eggs), how many egg cartons can Avery fill?
[Answer]: Avery has a total of 20 * 6 = 120 eggs. Avery can fill up 120 / 12 = 10 egg cartons.
So the answer is 10.

[Question]: Every week of last month Paul tried out a new cake recipe. The first week, he followed a cake recipe that called for 24 cups of sugar. Each week after that, he reduced the amount of sugar by half. How much sugar did he use for the cake on the fourth week?
[Answer]:
On the 2nd week, Paul halved the first week's sugar, therefore he used 24 / 2 = 12 cups. The third week, Paul used 12 / 2 = 6 cups. The fourth week, he used 6 / 2 = 3 cups.
So the answer is 3.