Question 872068

At a constant speed, the gasoline a car uses varies directly with the
distance the car travels. A car uses 10 gallons of gasoline to travel
210 miles. How many gallons will the car use to travel 294 miles?
<pre>
Let amount of gallons of gas be G
Then: {{{10/G = 210/294}}}
{{{10/G = 5/7}}} ------ Simplifying right-side of equation by dividing it by {{{42/42}}}
5G = 70 ------ Cross-multiplying
G or amount of gas = {{{70/5}}}, or {{{highlight_green(14)}}} gallons
You can do a check!! 

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