Use the conversation ratio 1 km equals about 0.62 miles to solve the following problem and airplane travels about 900 km per hour. What is the airplane speed in miles per hour?

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

To convert the airplane speed from kilometers per hour to miles per hour, we can use the conversion ratio of 1 km = 0.62 miles.

First, we need to multiply the given speed of 900 km/h by the conversion ratio:

900 km/h * 0.62 miles/km = 558 miles/h

Therefore, the airplane speed in miles per hour is 558 miles per hour.

Therefore, the answer is A. 558.