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User Sa
by
8.1k points

2 Answers

4 votes

Answer:

15 gallons

Explanation:

If you divide 420 miles by the 18 gallons, then you get 23.333333... meaning 23.3 miles per gallon. you than take 357 divided by 23.3

420/18=23.3

357/23.3=15.300.....

I hope this helps!

User Antoine Brunel
by
8.6k points
5 votes

Answer:

They would need 15.3 gallons.

Explanation:

In order to solve this, we use a proportion. The left side will have the original rate and the right side will have the unknown.

420m/18gal = 357m/xgal

Now cross multiply to solve.

420 * x = 18 * 357

420x = 6426

x = 15.3

User Dlemstra
by
8.0k points

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