Answer this question:Oliver had $9, then he saved $5 from his allowance and spent $4 on a frisbee and $3 on a puzzle. His friend gives him another $8 as it's his birthday. How much money does Oliver have left?
The total amount of money saved is $9 + $5 = $14. The total cost of the frisbee and the puzzle is $4 + $3 = $7. So Oliver has $14 - $7 = $7 left. His friend gives him $8, so now he has $7 + $8 = $15.
The answer is 15.

Answer this question:Sarah is buying Christmas presents for her family. She starts her shopping with a certain amount of money. She buys 2 toy cars for $11 each for her sons. She buys a scarf for $10 for her mother. Then she buys a beanie for $14 for her brother. If she has $7 remaining after purchasing the beanie, how much money did she start with?
Before purchasing the beanie, Sarah has $7 + $14 = $21. Before purchasing the scarf, Sarah has $21 + $10 = $31. The total cost of the toy cars is 2 * $11 = $22. Before purchasing the toy cars, Sarah has $31 + $22 = $53.
The answer is 53.

Answer this question:A school has 1000 students. Half of the students were taken on a trip to the nearby beach. Half of the remaining students were sent home. How many students are still in the school?
1000 * 1 / 2 = 500 students were taken on a trip to the nearby beach. So 1000 - 500 = 500 students were not taken to the beach. Thus, 1 / 2 * 500 = 250 students who were not taken to the beach were sent home. Thus, 500 - 250 = 250 students are still in school.
The answer is 250.

Answer this question:Michael has two brothers. His oldest brother is 1 year older than twice Michael's age when Michael was a year younger. His younger brother is 5 years old, which is a third of the age of the older brother. What is their combined age?
The oldest brother is 15 because 3 x 5 = 15. Michael is 8 because if 1 + (Michael's age - 1) x 2 = 15 then Michael's age = 8. Their combined age is 28 because 5 + 15 + 8 = 28.
The answer is 28.