A car can travel 240 miles on 16 gallons of gasoline. How far can it travel on 14 gallons?
Please don't give an irrelevant answer.
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Let x=distance traveled on 20 gal
One approach is to set up a simple ratio: 15 is to 240 as 20 is to x and this is written as follows:
15/240=20/x cross multiply (actually we are multiplying both sides by 240x)
15x=240*20=4800 divide both sides by 15
x=320 mi------------------------------------distance travelled on 20 gal
Another approach would be to determine the mileage the car gets in miles/gal:
If the car goes 240 mi on 15 gal, then it goes 240/15 or 16 mi on 1 gal.
Soooooooooo our car gets 16 mi/gal and it can go 16*20 or 320 mi on 20 gal
hope it helps you
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