[Question]: Gabrielle sells eggs. On Monday she sells 5 crates of eggs. On Tuesday she sells 2 times as many crates of eggs as Monday. On Wednesday she sells 2 fewer crates than Tuesday. On Thursday she sells half as many crates of eggs as she sells on Tuesday. How many total crates of eggs does she sell for the 4 days?
[Answer]: On Tuesday she sells 5 crates * 2 = 10 crates of eggs. On Wednesday she sells 10 crates - 2 crates = 8 crates of eggs. On Thursday she sells 1 / 2 * 10 crates = 5 crates of eggs. She sells a total of 5 crates + 10 crates + 8 crates + 5 crates = 28 crates of eggs.
So the answer is 28.

[Question]: Bert, Ernie, and Peggy collect stamps. Bert has four times as many stamps as Ernie, but Ernie has three times as many stamps as Peggy. If Peggy currently has 75 stamps in her collection, how many stamps does she need to add to her collection to have a collection as large as Bert's collection?
[Answer]: Ernie has three times as many stamps as Peggy, or 3 * 75 = 225 stamps. Bert has 4 times as many stamps as Ernie, or 4 * 225 = 900 stamps. Thus, Peggy would need 900 - 75 = 825 more stamps to have a collection as large as Bert's.
So the answer is 825.

[Question]: John puts $25 in his piggy bank every month for 2 years to save up for a vacation. He had to spend $400 from his piggy bank savings last week to repair his car. How many dollars are left in his piggy bank?
[Answer]:
He saved money for 2 years, which is equal to 12 x 2 = 24 months. The amount of money he saved is $25 * 24 = $600. But he spent some money so there is $600 - $400 = 200 left.
So the answer is 200.