Solve the problem. One gallon of a driveway sealant covers an area of 190 ft2. How many gallons of the sealant are needed to cover a 760 ft2 driveway?

Question

mathstudent55 · Answer

This is a proportion question. Do you know how to set up a proportion?

anonymous · Answer

no

anonymous · Answer

when i tried it i got 6

mathstudent55 · Answer

You set up two ratios and set them equal to each other.

mathstudent55 · Answer

You are given one ratio:
1 gallon : 190 ft^2

mathstudent55 · Answer

The other ratio has an unknown. It's the number of gallons. Let's call it x.
x gallons : 760 ft^2

mathstudent55 · Answer

Now you set the two ratios equal. It's easier to understand if you express the ratios as fractions.

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