Q: Jonas is a book collector. He has so many books he is converting his third bedroom into a library. This room has 400 square feet of space. He plans to put several bookshelves in the room and each bookshelf takes up 80 square feet of space. If he reserves 160 square feet of space to use for a desk and some walking space, how many shelves can he put in the room?
A: If he reserves 160 sq. ft. of space for a desk and some walking space, then he will have 400 - 160 = 240 sq. ft. of space remaining. If each bookshelf takes up 80 sq. ft. of space, then 240 sq ft can contain 240 / 80 = 3 bookshelves. The answer is 3.
Question: Manny had 3 birthday cookie pies to share with his 24 classmates and his teacher, Mr. Keith.  If each of the cookie pies were cut into 10 slices and Manny, his classmates, and Mr. Keith all had 1 piece, how many slices are left?
Answer: There is a total of 3 x 10 = 30 cookie slices. There are 24 + 1 + 1 = 26 people who ate the cookie pieces. There is 30 - 26 = 4 cookie slices left. The answer is 4.
[Question]Amanda needs 12 more marbles to have twice as many marbles as Katrina, and Mabel has 5 times as many marbles as Katrina. If Mabel has 85 marbles, how many more marbles does Mabel have than Amanda?
[Answer]Katrina has 85 / 5 = 17 marbles. Twice as many marbles as Katrina is 17 x 2 = 34. Amanda has 34 - 12 = 22 marbles. Mabel has 85 - 22 = 63 more marbles than Amanda. The answer is 63.
Q: Ivy baked 20 cupcakes in the morning and fifteen more cupcakes in the afternoon than in the morning. How many cupcakes did she bake?
A: In the afternoon, she baked 20 + 15 = 35 cupcakes more cupcakes. Therefore, she baked a total of 20 + 35 = 55 cupcakes. The answer is 55.
Question: Noah is a painter. He paints pictures and sells them at the park. He charges $60 for a large painting and $30 for a small painting. Last month he sold eight large paintings and four small paintings. If he sold twice as much this month, how much is his sales for this month?
Answer: Noah earned $60 / large painting x 8 large paintings = $480 for the large paintings. He also earned $30 / small painting x 4 small paintings = $120 for the small paintings. His total sales last month were $480 + $120 = $600. So, his sales this month are $600 x 2 = $1200. The answer is 1200.
Q: Madeline wants to drink 100 ounces of water in a day. Her water bottle can hold 12 ounces of water. She refills her water bottle 7 times. How much more water does she need to drink?
A:
She has already had 12 * 7 = 84 ounces of water. She needs to drink 100 - 84 = 16 more ounces to make it to 100 ounces. The answer is 16.