The time it takes to travel to a destination varies inversely with the average speed. It takes two hours when the average speed is 40mph. If the average speed changes to 80mph, what is the new travel time?

4hour.

We are given time takes to travel is inversely with an average speed.

Then,

If average speed is 80mph, let time taken be x:

Hence, it takes 4 hour to travel to a destination with 80mph.

By inverse proportionality,

40/2 = 80/x

40x = 160

x = 160/40

x = 4

So, new travel time is 4 hour.

answer: '

the distance between points l and m

step-by-step explanation:

irrational, cannot