The chanleys drove 112 miles ( or 7) on 4 gallons of gas. at this rate, how many mikes will they drive on 8 gallons

They will drive 224 miles

Explanation: We know that they can drive 112 miles on 4 gallons

We set that up as 112/4 (miles per gallon)

8 is 4 twice, in other words, 4 times 2

So now we can see that 112 ?

4 8

You do what you did on the bottom (times 2 to get 8) to the top (times 2 to get 224)

Hope this helps!

Your answer is 1190.25