[Question]Building A has 4 floors, which is 9 less than Building B. Building C has six less than five times as many floors as Building B. How many floors does Building C have?
[Answer]A = 4 floors. B = 4 + 9 = 13 floors. C = (13 * 5) - 6 = 59 floors. Building C has 59 floors. The answer is 59.

[Question]Lucas went to the store with $20 and needed to buy 3 avocados that cost $2 each. How much change does he bring home?
[Answer]The avocados cost 6 because 3 x 2 = 6. He brings home $4 in change because 20 - 6 = 14. The answer is 14.

[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?
[Answer]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.

[Question]The area of a triangle with a given base and height is given by 1/2*base*height. What is the base length of a triangle with height 8 and area 24 square units?
[Answer]
Let b be the base of the triangle. (1 / 2) * b * 8 = 24. 4 * b = 24. b = 6. The answer is 6.