Question

The water level in a tank measures 15 inches and is decreasing 0.5 inches every

minute.
How many minutes, x, will it take for the water level to measure 9 inches deep?

Answer 1

The answer is 12 minutes

Explanation:

This is because if you're seeing how long it takes to get from 15 inches to 9 inches, that is a difference of 6 inches.

6 / 0.5 inches per minute = 12 minutes