Question

Suppose the same hot air balloon begins descending at a rate of 20ft/ min from an elevation of 1350 ft.

What will be the elevation after 10 minutes?
A) 1150 ft
B) 1150 ft
C) 1250 ft
D) 1200 ft

Answer 1

The elevation of the hot air balloon after descending at 20 ft/min for 10 minutes from an initial elevation of 1350 ft is 1150 ft (Answer A).

Step-by-step explanation:

The student is asking about the elevation of a hot air balloon after descending at a constant rate. The balloon starts from an elevation of 1350 ft and descends at a rate of 20 ft per minute. To find the elevation after 10 minutes, we apply a simple arithmetic calculation by multiplying the rate (20 ft/min) by the duration (10 minutes) and then subtracting the result from the initial elevation.

The calculation is: 1350 ft - (20 ft/min × 10 min) = 1350 ft - 200 ft = 1150 ft. Therefore, the correct answer is (A) 1150 ft.