Question 1012376
With 1 gallon you can drive 18 miles. Correct? Your car gets 18 miles per gallon?
15 miles is less than 18 miles. Yes?
You need less than one gallon to go 15 miles. OK so far?
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You need:
15/18= 0.8333 gallon to go 15 miles.
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In 5 days, you go 5 times and come back 5 times= 10 times
You need 0.8333 gallon each 15 miles, meaning each time you go and each time you come back. Since you go and come back 10 times:
10*0.8333= 8.3333 gallon
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Price per gallon: 2.50
2.50*8.333= $20.83 is how much it will cost you per 5 day weeek to get to and from work