document.write( "Question 927674: For a certain bathtub, it takes the cold water faucet
\n" ); document.write( "4
\n" ); document.write( " times as long to fill the tub as it does the hot water faucet. Left on together, the two faucets take
\n" ); document.write( "4
\n" ); document.write( " minutes to fill the tub. How long will it take the cold water faucet to fill the tub by itself? \n" ); document.write( "
Algebra.Com's Answer #563168 by nerdybill(7384)\"\" \"About 
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For a certain bathtub, it takes the cold water faucet 4 times as long to fill the tub as it does the hot water faucet. Left on together, the two faucets take 4 minutes to fill the tub. How long will it take the cold water faucet to fill the tub by itself?
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\n" ); document.write( "Let x = time (minutes) it takes for hot water faucet
\n" ); document.write( "then
\n" ); document.write( "4x = time (minutes) for cold
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\n" ); document.write( "4(1/x + 1/(4x)) = 1
\n" ); document.write( "multiply both sides by 4x:
\n" ); document.write( "4(4 + 1) = 4x
\n" ); document.write( "4(5) = 4x
\n" ); document.write( "20 = 4x
\n" ); document.write( "5 minutes = x (hot water)
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\n" ); document.write( "Time it takes for cold water faucet to fill tub by itself:
\n" ); document.write( "4x = 4(5) = 20 minutes\r
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