Question

An airplane files with a constant speed of 680 km/h. How far can it travel in 2 1/4 hours?

Answer 1

`(distance)/(hour) =(680km)/(1 hour) = (x)/(2(1)/(4))\\ (680)/(1) = (x)/(2(1)/(4))\\ 680*2(1)/(4)=1*x\\ 1530=x`

The plane can travel 1530km in
`2 (1)/(4)`hours.