Joe needs to paint all the airplane hangars at the airport, so he buys 360 gallons of paint to do the job. During the...

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Manhattan Prep

Joe needs to paint all the airplane hangars at the airport, so he buys 360 gallons of paint to do the job. During the first week, he uses 1/4 of all the paint. During the second week, he uses 1/5 of the remaining paint. How many gallons of paint has Joe used?

A. 18
B. 144
C. 175
D. 216
E. 250

OA B

[Scott@TargetTestPrep]

Manhattan Prep

Joe needs to paint all the airplane hangars at the airport, so he buys 360 gallons of paint to do the job. During the first week, he uses 1/4 of all the paint. During the second week, he uses 1/5 of the remaining paint. How many gallons of paint has Joe used?

A. 18
B. 144
C. 175
D. 216
E. 250

OA B

Solution:

In the first week, Joe uses 1/4 x 360 = 90 gallons of paint, so 270 gallons are left.

Then, in the second week, he uses 1/5 x 270 = 54 gallons of paint.

So, in total he has used 90 + 54 = 144 gallons.

Answer: B