Posted by **John** on Saturday, May 12, 2012 at 10:38pm.

The cars in a car service use a total of gallons of gasoline per week. If each of the cars uses the same amount of gasoline, then, at this rate, which of the following represents the number of gallons used by 5 of the cars in 2 weeks?

A. 10CG

B. 2G/5C

C. 5G/2C

D. G/10C

E. 10G/C

why is E correct, i do not understand the answer given by College Board for this SAT question of the day. Thank you in advance for the help!

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