document.write( "Question 61080This question is from textbook Intermediate Algebra
\n" ); document.write( ": A community water tank can be filled in 18hr by the town office well alone and in 22hr by the high school will alone. How long will it take to fill the tank if both wells are working? \n" ); document.write( "
Algebra.Com's Answer #42000 by uma(370)\"\" \"About 
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Time taken by town office well to fill the tank = 18 hrs.
\n" ); document.write( "So quantity filled in 1 hr = 1/18 th part of the tank\r
\n" ); document.write( "\n" ); document.write( "Time taken by high school well to fill the tank = 22 hrs.
\n" ); document.write( "So quantity filled in 1 hr = 1/22 nd part of the tank\r
\n" ); document.write( "\n" ); document.write( "When both the wells are open, quantity filled up in 1 hr =1/18 + 1/22
\n" ); document.write( " = (11+9)/198 [taking LCD]
\n" ); document.write( " = 20/198 part of the tank\r
\n" ); document.write( "\n" ); document.write( "So time needed by both the wells to fill the tank = 198/20 hrs
\n" ); document.write( " = 9.9 hrs\r
\n" ); document.write( "\n" ); document.write( " = 9 hrs 54 min\r
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\n" ); document.write( "\n" ); document.write( "Good Luck!!!
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