document.write( "Question 935746: A pond has two inlet pipes to fill a pond up.One pipe can fill the pond in 10 hours.The second pipe in 12 hours If the first pipe is open for 5 hours and then the second pipe is open ,how long will it take both pipes working together to fill the pond? This is what I did.... t/10 + t/12 =1/2...my question is did I set this equation up right....tks tutors. \n" ); document.write( "
Algebra.Com's Answer #569035 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
THE ANSWER IS \"YES\" YOU HAVE ARRIVED AT THE CORRECT EQUATION TO SOLVE BUT I'M NOT SURE WHAT YOU RATIONALE WAS. :) \r
\n" ); document.write( "\n" ); document.write( "Let t=amount of time it takes both pipes to finish filling the pond
\n" ); document.write( "First pipe fills at the rate of 1/10 of the pond per hour
\n" ); document.write( "Second pipe fills at the rate of 1/12 of the pond per hour
\n" ); document.write( "After 5 hours, first pipe fills (1/10)*5=5/10 = 1/2 of the pond leaving 1/2 of the pond yet to be filled.\r
\n" ); document.write( "\n" ); document.write( "So both pipes working together fills at the rate of 1/10 + 1/12=6/60+5/60=11/60 of the pond per hour.\r
\n" ); document.write( "\n" ); document.write( "Our equation to solve then is:
\n" ); document.write( "(11/60)*t=1/2
\n" ); document.write( "Or we can write the equation this way:
\n" ); document.write( "t/10 + t/12 = 1/2 which is exactly what you have.\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps----ptaylor \n" ); document.write( "
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