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?
A. 558
B. 899.38
C. 1,240
D. 1,451.6
To convert kilometers to miles, you need to multiply by 0.62.
So, to find the airplane's speed in miles per hour, you can multiply the given speed of 900 kilometers per hour by 0.62:
900 km/h * 0.62 miles/km = 558 miles/hour
Therefore, the airplane's speed in miles per hour is 558.
The correct answer is A. 558.