Question

12. A red drone is 100 feet off the ground and is rising at 8 feet per second. A blue drone is 180

feet off the ground and is rising at 5 feet per second. How long will it take the red drone to be
higher than the blue drone? Round to the nearest second.

Present work using inequalities

Answer 1

The red drone will be at the same height as the blue drone at 33.33 seconds, therefore higher at 34 seconds.

Explanation:

Red drone = 100 + 8*seconds

Blue drone = 180 + 5*seconds

100 + 8*seconds = 180 + 5*seconds

3*seconds = 100

seconds = 33.33