Answer this question:Lynne bought 7 books about cats and 2 books about the solar system. She also bought 3 magazines. Each book cost 7$ and each magazine cost $4. How much did Lynne spend in all?
Lynne bought a total of 7 + 2 = 9 books. The books cost Lynne 9 x 7 = $63. For 3 magazines, Lynne spent 3 x 4 = $12. In total, Lynne spent 63 + 12 = 75$.
The answer is 75.

Answer this question:Olaf has an aquarium. He has fish in 3 different colors: orange, green, and blue. Blue fish make up half of all the fish in the aquarium. There are 15 fewer orange fish than blue fish. How many green fish are there when the total number of fish in the aquarium is 80?
If there are 80 fish in total, then there are 80 fish / 2 = 40 blue fish. The orange fish count is 15 less than blue, so it's 40 fish - 15 fish = 25 fish. Olaf has then 80 fish - 25 fish - 40 fish = 15 green fish.
The answer is 15.

Answer this question:Alan bought a $2000 phone online. John bought it 2% more expensive in a local store. How much did John spend on his phone?
The difference in price is 2% * 2000 = $40. So, the price of John’s phone is 2000 + 40 = $2040.
The answer is 2040.

Answer this question:Kendra baked cookies for her family. Each batch contains 12 cookies. His family has 4 total people. She made three batches. Each cookie contains 2 chocolate chips. How many chips does each family member eat if they all get the same number of cookies?

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.
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She made 36 cookies because 12 x 3 = 36. These contain 72 chocolate chips because 36 x 2 = 72. They each get to eat 18 chocolate chips because 72 / 4 = 18.
The answer is 18.