Question

An airplane flies at a constant speed of 800 MPH. how far can it travel in 3 1/2 hours

Answer 1

2,800 Miles


Its Miles Per Hour (MPH) so there is three whole hours
(800 x 3)

And

Answer 2

2800

The math behind it:

800(Mph) x 3(Hours) = 2400(Miles traveled in 3hrs)

800(Mph) x 1/2(or .50hrs) = 400(Miles traveled in 1/2 an hr)

2400(Miles traveled in 3hrs) + 400(Miles traveled in 1/2 an hr) = 2800(Miles traveled in 3 and 1/2hrs)

Hope this helps! :) Have a nice day!