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3 years ago

David drives 168 miles a week he fill his tank 2 times a week each fill up is 12 gallons what is gas mileage on his car

Mathematics

2 answers:

Umnica [9.8K]3 years ago

5 0

I think it would be 7 miles per gallon. Just do Miles/Gallons per week.

AnnyKZ [126]3 years ago

5 0

Answer:

7 miles per gallon

Step-by-step explanation:

David fill up his car's tank 2 times in a week.

each fill up is = 12 gallons

so each week he uses gas = 12 × 2 = 24 gallons

David drives in a week = 168 miles

Since, He drives 168 miles in 24 gallons of gas

The mileage on his car = 168 ÷ 24 = 7 miles per gallon

The gas mileage of David's car is 7 miles per gallon.

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Hoochie [10]

we have

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Let's Isolate the variable y in each of the cases and then compare with Fiona's equation to determine the solution of the problem

case A) $x-\frac{5}{4}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-5y= 25$

$5y=4x-25$

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$y=\frac{4}{5}x-5$

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the case A) is not equal to Fiona's equation

case B) $x-\frac{5}{2}y= \frac{25}{4}$

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$10y=4x-25$

Divide by $10$ both sides

$y=\frac{2}{5}x-2.5$

therefore

the case B) is not equal to Fiona's equation

case C) $x-\frac{5}{4}y= \frac{25}{2}$

Multiply by $4$ both sides

$4x-5y= 50$

$5y=4x-50$

Divide by $5$ both sides

$y=\frac{4}{5}x-10$

therefore

the case C) is not equal to Fiona's equation

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Multiply by $2$ both sides

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Divide by $5$ both sides

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therefore

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the answer is

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