document.write( "Question 897896: It takes you 15 minutes to wash a car and it takes a friend in 9 minutes to wash a car how long does it take the two of you to wash 8 cars if you work together \n" ); document.write( "
Algebra.Com's Answer #544418 by ewatrrr(24785)\"\" \"About 
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\"1%2F15+%2B+1%2F9+=+1%2Fx\" |Multiplying thru by 45x so as all denominators = 1
\n" ); document.write( " 3x + 5x = 45
\n" ); document.write( " x = 45/8 (one car together), 8 cars... 45miin
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