John --- 1/6 lwn/hr
Jane --- 1/3 lwn/hr
1/6 + 2/6 = 3/6 = 1/2 lwn/hr
so 2 hours
JOHN MOWS HIS LAWN IN 6 HRS,WHEREAS JANE MOWS SAME LAWN IN 3 HRS?? MY QUESTION IS HOW MUCH TIME WOULD IT TAKE FOR BOTH TO MOW THE LAWN TOGETHER???
4 answers
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