Question

An airplane is traveling at 400 mph. Which equation can be used to fine the total distance the plane will travel in h hours?

A. d=h/400 B. d= h+400 C. d= 400xh D. d= 400- h

Answer 1

The general equation we use when dealing with distance, speed and time is:
Distance = Speed × Time
And this equation can be rearranged: s=d÷t, t=d÷s
So to find the distance in hours, you must multiply the speed (400mph) by the time (h).
Thus, the answer is D. 400×h

Answer 2

Hello!

To calculate the distance, you use the formula d=rt. As you can see, the only option of yours that multiplied the rate and time is C.

Therefore, our answer is C) d=400xh

I hope this helps!