Question

a wheel completes 900 revolutions in 30 minutes. at this rate, how many revolutions per minute does this wheel complete?
a 30
b 870
c 930
d 1,200

Explanation:

Step1: Calculate revolutions per minute

To find the number of revolutions per minute, divide the total number of revolutions by the total number of minutes.
$$\frac{900}{30}$$

Step2: Simplify the fraction

$$\frac{900}{30}=30$$

Answer:

A. 30