If a granular spreader operates over a 150 ft test course in 45 seconds, how do you calculate the speed in feet per minute?

To calculate the speed in feet per minute when a granular spreader operates over a 150 ft test course in 45 seconds, you need to determine how far the spreader travels in one minute.

First, you calculate the speed in feet per second by dividing the distance traveled (150 feet) by the time it takes (45 seconds). This gives you the speed in feet per second:

150 ft ÷ 45 sec.

However, since the question asks for speed in feet per minute, you need to convert seconds to minutes. There are 60 seconds in a minute, so to find the speed in feet per minute, you multiply the speed in feet per second by 60 seconds:

(150 ft ÷ 45 sec) x 60.

This process gives you the correct calculation to convert your speed from feet per second to feet per minute. Therefore, using this formula accurately calculates the speed, confirming that option A is the right choice for this question.