Question

Going 40 miles an hour how long would it take me to go 60 miles?

Answer 1

`1 1/2` hours

Explanation:

Distance traveled is equal to speed multiplied by time:

`d=st`

Where `d` is distance traveled, `s` is the speed, and `t` is the time (here, it will be in hours, as we're using miles per hour).

Plugging in our distance and speed, we get:

`60=40t`

`t=60/40=6/4=3/2` hours, or `1 1/2` hours

Answer 2

`90` minutes `("1.5 hrs")`

Explanation:

If you are travelling at `"40 mph"`, then it will take `30` minutes to go `20` miles and `60` minutes to go `40` miles. Thus, it will take `90` minutes to go `60` miles.

Alternatively:

`"Speed"("mph")= ("Distance"("miles"))/("time"("hours"))`

`40=60/(t)`

`t="1.5 hours"`