Q: Mrs. Thompson bought 3 chickens for $3 each. She also bought a bag of potatoes. Mrs. Thompson paid $15 in total. How much did the potatoes cost?
A: The 3 chickens amount to $3 x 3 = $9. Hence, the potatoes cost $15 - $9 = $6. The answer is 6.
Question: There were 37 jellybeans in a jar. Pat removed 15 of them. Pat then added 5 of the removed jellybeans back in, and then removed 4 more. How many jellybeans are now in the jar?
Answer: After removing 15 jellybeans, there were 37 - 15 = 22 jellybeans in the jar. After adding back 5 jellybeans, there were 22 + 5 = 27 jellybeans in the jar. After removing 4 more jellybeans, there were 27 - 4 = 23 jellybeans left in the jar. The answer is 23.
[Question]Out of the 80 students who took the biology exam, only 2/5 of them managed to score 100%. If a score below 80% qualified as failing, and 50 percent of the remaining students who didn't score 100% managed to score over 80%, calculate the number of students who failed the exam.
[Answer]The number of students who scored 100% is 2 / 5 * 80 = 32. Out of the 80 students, 80 - 32 = 48 did not score 100%. If 50% of the students who did not score 100% managed to score over 80%, then 50 / 100 * 48 = 24 students scored over 80%. The number of students who failed is 48 - 24 = 24. The answer is 24.
Q: Without factoring in the cost of depreciation for his car John made $30,000 doing Uber. When he finally traded in the car he bought for $18,000 he got $6000 back. What was his profit from driving Uber?
A: His car depreciated 18000 - 6000 = $12000. So he made a profit of 30000 - 12000 = $18000. The answer is 18000.
Question: A carpenter made ten tables for this month. Last month, he made three fewer tables than this month. How many tables did the carpenter make in total?
Answer: The carpenter made 10 - 3 = 7 tables last month. So, the carpenter made 10 + 7 = 17 tables in all. The answer is 17.
Q: Liz bought a recipe book that cost $6, a baking dish that cost twice as much, five ingredients that cost $3 each, and an apron that cost a dollar more than the recipe book. Collectively, how much in dollars did Liz spend?
A:

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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The baking dish cost 6 * 2 = 12. The ingredients cost 5 * 3 = 15. The apron cost 6 + 1 = 7. Collectively, Liz spend 6 + 12 + 15 + 7 = 40. The answer is 40.