[Question]: Cristian has 50 more black cookies in his cookie jar than white cookies. He eats half of the black cookies and 3/4 of the white cookies. If he initially had 80 white cookies, how many cookies are remaining within the cookie jar altogether?
[Answer]: Cristian eats 3 / 4 * 80 = 60 white cookies from the jar, 3 / 4 of the total number of white cookies in the cookie jar. The number of white cookies remaining in the cookie jar is 80 - 60 = 20. In his cookie jar, Cristian also has 80 + 50 = 130 black cookies. He eats 1 / 2 * 130 = 65 black cookies from the cookie jar. He remains with 130 - 65 = 65 black cookies after eating half of them. In total, Cristian has 65 + 20 = 85 cookies remaining in the jar.
So the answer is 85.

[Question]: Whitney bought 9 books about whales and 7 books about fish. She also bought 3 magazines. Each book cost $11 and each magazine cost $1. How much did Whitney spend in all?
[Answer]: The total number of books is 9 books + 7 books = 16 books. The cost of the books is $11 / book × 16 books = $176. The cost of the magazines is $1 / magazine × 3 magazines = $3. Whitney spent $3 + $176 = $179 in all.
So the answer is 179.

[Question]: Mr. Zubir bought a pair of pants, a shirt, and a coat. The pair of pants and shirt costs $100. The pants and coat cost $244. The coat costs 5 times as much as the shirt. How much did Mr. Zubir pay for his coat?
[Answer]:
Let X be the coat's price. The shirt's price is X / 5. The pants and the shirt cost $100, so the pants price is $100 - X / 5. The pants and coat costs ($100 - X / 5) + X = $244. Combining like terms and subtracting $100 from both sides, we get 4 / 5 * X = $144. Dividing both sides by 4 / 5, we get X = $180.
So the answer is 180.