Use the conversion ratio 1 kilometer equals about 0.62 miles to solve the following problem. An airplane travels about 900 kilometers per hour. What is the airplane's speed in miles per hour?

Question

A. 558
B. 1,451.6
C. 1,240
D. 899.38

Answer 1

To convert from kilometers per hour to miles per hour, we need to multiply the speed in kilometers per hour by the conversion ratio of 0.62.

900 kilometers per hour * 0.62 = 558 miles per hour

Therefore, the airplane's speed in miles per hour is 558, so the answer is A. 558.