Use the conversion ratio 1 kilometer equals about 0.62 miles to solve the following problem. It may help to set up a proportion.
An airplane travels about 900 kilometers per hour. What is the airplane's speed in miles per hour?
1 kilometer
0.62 miles
A
1240
B
558
C
899.38
D
1451.6
To solve this problem, we can set up a proportion using the conversion ratio:
(1 kilometer) / (0.62 miles) = (900 kilometers) / x
Cross-multiplying and solving for x, we get:
0.62x = 900
x = 900 / 0.62
x ≈ 1451.6
Therefore, the airplane's speed is approximately 1451.6 miles per hour.
The correct answer is D. 1451.6.