Homework Help: Math

Posted by Bob on Wednesday, April 25, 2012 at 4:18pm.

Mr. Rainier's car uses about 1.6 fluid ounces of gas per minute when the engine is idling. One night, he parked his car but forgot to turn off the motor. He had just filled his tank. His tank holds 12 gallons.
About how many hours will it take before his car runs out of gas?

Math - PsyDAG, Thursday, April 26, 2012 at 11:56am
1 gallon = 128 fluid ounces

1 hour = 60 minutes

Let x = time in hours.

(1.6)(60)x = 12(128)

Solve for x.

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