Question

A plane is traveling at a speed of 400 miles per hour how far will the plane travel in 5 hours

Answer 1

Since you know how far the plane travels in one hour (400 Miles). To find out how far it will go in five, multiply the amount it goes in one hour by five. 

400 × 5 = 2000

So 2,000 miles is your answer :)

Answer 2

400 miles per 1 hour
400miles=1hour
times 5 both sides
2000miles=5hours

answer is 2,000 miles