[Question]John buys 3 barbells and gives $850 and gets $40 in change. How much did each barbell cost?
[Answer]The total price of the barbells was 850 - 40 = $810. So each one cost 810 / 3 = $270. The answer is 270.
Q: The Early Bird Dinner offered dinner meals at half off the menu price if you eat between 2-4 pm. Curtis ordered the Salisbury Steak that costs $16.00 and Rob ordered the Chicken Fried Steak at $18.00. If they ate at 3 pm, what was the cost of their total bill?
A: Curtis had the Salisbury steak for $16.00 and Rob had the Chicken Fried Steak at $18.00 so their meal cost 16 + 18 = $34.00. They ate 3 pm so their meal is half off so their meal cost 34 / 2 = $17.00. The answer is 17.
Question: Will's mom gave him $74 to go shopping. He bought a sweater for $9, a T-shirt for $11 and a pair of shoes for $30. He then returned his shoes for a 90% refund. How much money does Will have left?
Answer: Will paid $30 for his shoes but then returned them and got 90% of the money back, so he lost 10% of the money, which means 10 / 100 * $30 = $3 is gone. Will spent $9 + $11 + $3 = $23. Will started with $74 - $23 that he spent = $51 remaining. The answer is 51.
[Question]A mother planted a 16-inch tree on her son's first birthday. On the day the tree was planted, the boy was 24 inches tall. If the tree grows twice as fast as the boy does, how tall will the tree be by the time the boy is 36 inches tall?
[Answer]The boy grew 36 - 24 = 12 inches since the tree was planted. Since the tree grows twice as fast as the boy, it will have grown 12 * 2 = 24 inches during this time period. Thus, the final height of the tree is 16 + 24 = 40 inches. The answer is 40.
Q: The epic poem currently contains 24 lines. If a person adds 3 lines to the poem every month, in how many months will the poem contain 90 lines?
A: If the epic poem currently contains 24 lines, the total number of lines added for it to reach 90 is 90 - 24 = 66 lines. If a person adds 3 lines to the poem every month, it will take 66 / 3 = 22 months for the poem to contain 90 lines. The answer is 22.
Question: Sid takes $48 with him on a shopping trip to the mall. He spent some of his money on computer accessories and another $8 on snacks. After these purchases, he only has $4 more than half of his original money left. How much did he spend on computer accessories?
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Half of Sid's original money is $48 / 2 = $24. Sid has only $24 + $4 = $28 left after his purchases. He had $28 + $8 = $36 before he spent $8 on snacks. So, Sid spent $48 - $36 = $12 on computer accessories. The answer is 12.