We have a question: Sidney has 4 kittens and 3 adult cats. She has 7 cans of cat food. Each adult cat eats 1 can of food per day. Each kitten eats 3/4 of a can per day. How many additional cans of food does Sidney need to buy to feed all of her animals for 7 days.
And an answer: 35
So how you got the answer?
Sidney has 3 adult cats * 1 can of food = 3 cans of food per day. Sidney's adult cats will need 3 cans * 7 days = 21 cans for the week. Sidney has 4 kittens * 3 / 4 cup of food = 3 cans of food per day. Sidney's kittens will need 3 cans * 7 days = 21 cans for the week. Sidney will need to buy 21 cans + 21 cans - 7 cans = 35 cans.

We have a question: Louis is making himself a velvet suit for a formal event. The velvet fabric he chose was $24 per yard. He bought a pattern for $15, and two spools of silver thread for $3 each. If he spent $141 for the pattern, thread, and fabric, how many yards of fabric did he buy?
And an answer: 5
So how you got the answer?
Let V be the number of yards of velvet fabric Louis bought. The silver thread cost 2 * 3 = $6. He spent 24V + 15 + 6 = $141 on the suit. The fabric cost 24V = 141 - 15 - 6 = $120. Thus, Louis bought V = 120 / 24 = 5 yards of fabric.

We have a question: Jason goes to the library 4 times more often than William goes. If William goes 2 times per week to the library, how many times does Jason go to the library in 4 weeks?
And an answer: 32
So how you got the answer?
The number of times Jason goes to the library per week is 4 * 2 = 8 times. The number of times he goes to the library in 4 weeks is 8 * 4 = 32 times.