document.write( "Question 1099571: A tap can fill a tank in 6 mins and another can fill the same tank in 8 mins .How long will it take to fill the tank if the two taps were opened at the same time? \n" ); document.write( "
Algebra.Com's Answer #713993 by Theo(13342)\"\" \"About 
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rate * time = quantity\r
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\n" ); document.write( "\n" ); document.write( "first tap fills the tank in 6 minutes.
\n" ); document.write( "rate for the first tap is 1/6 of the tank in 1 minute.\r
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\n" ); document.write( "\n" ); document.write( "second tap fills the tank in 8 minutes.
\n" ); document.write( "rate for the second tap is 1/8 of the tank in 1 minute.\r
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\n" ); document.write( "\n" ); document.write( "when they are both open, their rates are additive.\r
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\n" ); document.write( "\n" ); document.write( "1/6 + 1/8 = 4/24 + 3/24 = 7/24\r
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\n" ); document.write( "\n" ); document.write( "their combined rate is 7/24 of the tap in 1 minute when they are both open.\r
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\n" ); document.write( "\n" ); document.write( "rate * time = quantity.\r
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\n" ); document.write( "\n" ); document.write( "rate is 7/24 of the tank in 1 minute.
\n" ); document.write( "time is what you want to find
\n" ); document.write( "quantity is 1 full tank\r
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\n" ); document.write( "\n" ); document.write( "formula becomes 7/24 * time = 1\r
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\n" ); document.write( "\n" ); document.write( "solve for time to get time = 1 * 24/7 = 24/7 minutes = 3 and 3/7 minutes.\r
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