briem115 briem115

09-11-2018
Mathematics

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how many miles would it take for one gallon if 140 miles took 7 gallons

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

09-11-2018

140 miles / 7 gallons = 20 miles per gallon

this means you can go 20 miles using 1 gallon

Answer Link

11-11-2018

[tex]\begin{array}{ccc}7\ gallons&-&140\ miles\\1\ gallon&-&x\ miles\end{array}\qquad|\text{cross multiply}\\\\7x=140\qqiad\text{divide both sides by 7}\\\\\boxed{x=20}[/tex]

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