document.write( "Question 371383: How do I solve this step-by-step? By checking work records, a plumber finds that Raul can plumb a house in 48hr. Mira can do the same job in 36hr. How long would it take if they worked together? \n" ); document.write( "

Algebra.Com's Answer #264566 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "Raul can plumb a house in 48hr. Mira can do the same job in 36hr
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document.write( "Let x represent the time it would take together.
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document.write( "Amount done per hr is the equalizer
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document.write( "1/48 + 1 / 36 = 1/x  Multiplying each term by 144x so as all denominators = 1
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document.write( "144x/48 + 144x/36 = 144x/x
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document.write( "3x + 4x = 144
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document.write( "7x = 144
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document.write( "x = 20.57 hrs is the time it takes working to gether ro plumb the house\r
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