document.write( "Question 859160: It takes a man 4 hours to wash and wax the family car. If his teenage son helps him, it only takes 1 hour. How long would it take the son, working alone, to wash and wax the car? \n" ); document.write( "
Algebra.Com's Answer #517584 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi,
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document.write( "Let x represent the son's time
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document.write( " 1/4 + 1/x = 1/1           |Multiplying thru by 4x so as all denominators = 1
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document.write( "  x + 4 = 4x    
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document.write( "      4/3 = x, the son's time, 1 1⁄3 hr 0r 1 hr 20min 
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