Question

A glider begins its flight 3/4 mile above the ground. After 30 minutes, it is 3/5 mile above the ground. Find the change in height of the glider?

Answer 1

The change in height of the glider is 3/20 mile

Explanation:

we know that

To find out the change in height of the glider subtract 3/5 mile from 3/4 mile

`((3)/(4)-(3)/(5))`

Find the LCM of denominators

`LCM=(4)(5)=20`

`((3)/(4)-(3)/(5))=(5*3-4*3)/(20)=(3)/(20)\ mi`

therefore

The change in height of the glider is 3/20 mile