document.write( "Question 418676: one pipe fills a tank in 8 minutes, another pipe can fill it in 12 minutes. find the time taken to fill the tank when both pipes are running together? \n" ); document.write( "
Algebra.Com's Answer #292946 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! One pipe fills 1/8 of the tank per minute. \n" ); document.write( "The other fills 1/12 of the tank per minute. \n" ); document.write( "Together, they fill 1/8 + 1/12 per minute = 3/24 + 2/24 = 5/24 \n" ); document.write( "5/24 tank per minute --> 24/5 minutes per tank \n" ); document.write( "= 4.8 minutes \n" ); document.write( "----------------- \n" ); document.write( "Use the shortcut, product/sum \n" ); document.write( "8*12/(8+12) = 96/20 \n" ); document.write( "= 4.8 minutes \n" ); document.write( " \n" ); document.write( " |