Emily bought a shirt and a coat for $600. What does the shirt cost if it is one-third the price of the coat?
Let's think: Let X be the price of the shirt. The price of the coat is X * 3. The total amount is X + X * 3 = $600. Combining like terms, we get X * 4 = $600. Dividing both sides by 4, we get X = $600 / 4 = $150.. The answer is: 150.

Troy bakes 2 pans of brownies, cut into 16 pieces per pan. The guests eat all of 1 pan, and 75% of the 2nd pan. One tub of ice cream provides 8 scoops. If all but 4 of the guests eat the brownies ala mode (with 2 scoops of vanilla ice cream), how many tubs of ice cream did the guests eat?
Let's think: Troy bakes 2 x 16 = 32 brownie pieces. 75% of one pan is 16 x 0.75 = 12 pieces. Guests eat 16 + 12 = 28 pieces. This many guests eat the brownies ala mode 28 - 4 = 24. This many scoops are eaten by the guests 24 x 2 = 48. The guests eat this many tubs 48 / 8 = 6 tubs.. The answer is: 6.

Jangshe spent $610 on 7 pieces of clothing. One piece was $49 and another piece was $81. If the other pieces were all the same price, how many dollars was one of the other pieces?
Let's think: 610 - 49 = 561, and then 561 - 81 = 480. There were 7 - 2 = 5 other pieces. 480 / 5 = 96 dollars. The other 5 pieces cost $96 each.. The answer is: 96.

There were 21 dollars in the cookie jar. Doris spent $6 from the cookie jar. Martha spent half as much as Doris. How much money, in dollars, was left in the cookie jar?
Let's think:
Martha spent 6 / 2 = 3 dollars. Martha and Doris spent 6 + 3 = 9 dollars. There were 21 - 9 = 12 dollars left in the cookie jar.. The answer is: 12.