Reasoning and answer: Since a dozen is equal to 12, then Mark's egg farm supplies one store with 5 x 12 = 60 eggs each day. It supplies the two stores with a total of 60 + 30 = 90 eggs each day. Therefore, the egg farm supplies the two stores with 90 x 7 = 630 eggs in a week.
The answer: 630
What was the question?
Question: Mark has an egg farm. His farm supplies one store with 5 dozen eggs and another store with 30 eggs each day. How many eggs does he supply these two stores in a week?


There will be 50 x 2 = 100 parents that are expected to attend. 20 / 2 = 10 administrators will attend. Hence, 50 graduates + 100 parents + 20 teachers + 10 administrators = 180 chairs must be prepared.
The answer: 180
Reverse engineering the question: In a graduation ceremony, each graduate can bring their 2 parents. Twenty teachers and half as many administrators will also attend the graduation ceremony. If there are 50 graduates, how many chairs must be prepared for the ceremony?


Reasoning and answer: Tamtam has a total of 13 + 8 + 18 + 12 = 51 shells that are not orange. Therefore, Tamtam has a total of 65 – 51 = 14 orange shells.
The answer: 14
What was the question?
Question: Tamtam collected 65 shells in total. She got 13 purple shells, 8 pink shells, 18 yellow shells, and 12 blue shells. The remaining shells are color orange. How many orange shells are there?


Let a be the amount of time Maryann spends doing accounting and c be the amount of time she spends calling clients: We know that a + c = 560 and a = 7c. Substituting the second equation into the first equation, we get 7c + c = 560. Combining like terms, we get 8c = 560. Dividing both sides by 8, we get c = 70.
The answer: 70
Reverse engineering the question: Maryann spends seven times as long doing accounting as calling clients. If she worked 560 minutes today, how many minutes did she spend calling clients?


Reasoning and answer: They made 13 + 16 = 29 mini cupcakes altogether. They made 10 + 12 = 22 pop tarts altogether. They also made 8 + 14 = 22 blueberry pies altogether. Therefore they made a total of 29 + 22 + 22 = 73 pastries altogether.
The answer: 73
What was the question?
Question: Lola baked 13 mini cupcakes, 10 pop tarts, and 8 blueberry pies. Meanwhile, Lulu made 16 mini cupcakes, 12 pop tarts, and 14 blueberry pies. How many pastries have Lola and Lulu made altogether?


Reasoning and answer: After one year he earns $200 in interest because 1,000 x .2 = 200. After one year it has $1,200 in the account because 1,000 + 200 = 1,200. He takes out $600 because 1,200 / 2 = 600. After this it has $600 in it because 1,200 - 600 = 600. She earns $90 in interest because 600 x .15 = 90. The account now has $690 because 600 + 90 = 690.
The answer: 690
What was the question?
Question:

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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Tony puts $1,000 in a savings account for 1 year. It earns 20% interest. He then takes out half the money to buy a new TV. The next year, the remaining money earns 15% interest. How much is now in the account?