document.write( "Question 250609: Jack usually mows his lawn in 5 hours. Mary can mow the same yard in 3 hours. how much time would it take for them to mow the lawn together? \n" ); document.write( "
Algebra.Com's Answer #182500 by edjones(8007)\"\" \"About 
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Jack does the 1/5 the job in 1 hr & Mary 1/3 in 1 hr.
\n" ); document.write( "1/5 + 1/3
\n" ); document.write( "= 3/15 + 5/15 = 8/15 together in 1 hr or 15/8 hrs it takes to do the job together.
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