George’s car can drive 30 miles on 1/2 gallon of gas. How many gallons of gas will he use to drive 20 miles?

1 answer:

8 0

The best way to do this is to set up a proportion

30 20
---- = -----
0.5 x

then cross multiply and divide

20 × 0.5 = 10/30=1/3

he needs 1/3 tank of gas to drive 20 miles

I hope I've helped!

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