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Chapter 7: Q. 264 (page 714)

Jesse鈥檚 car gets 30 miles per gallon of gas.

鈸� If Las Vegas is 285 miles away, how many gallons of gas are needed to get there and then home?

鈸� If gas is $3.09 per gallon, what is the total cost of the gas for the trip?

Short Answer

Expert verified

鈸� 19 gallons of gas are needed to get to Las Vegas and then home.

鈸� Cost of the gas for the trip is $58.71 .

Step by step solution

01

Step 1. Given information 

Jesse鈥檚 car gets 30 miles per gallon of gas.

02

Step 2. Required to find 

鈸� If Las Vegas is 285 miles away, how many gallons of gas are needed to get there and then home?

鈸� If gas is $3.09 per gallon, what is the total cost of the gas for the trip?

03

Step 3. Finding gallons of gas needed to get to Las Vegas and then home

Distance of the journey from home to Las Vegas and back is: 2脳285=570miles.

1 gallons of gas required for 30 miles of travel and agallons required for the given journey of 570miles. then, the required proportion is: 130=a570

a=57030

a=19gallons of gas

04

Step 4. Finding cost of the gas for the trip

Cost of gas is $3.09 per gallon.

Therefore, Cost of gas for the journey requiring 19 gallons of gas is: 19脳3.09=$58.71

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