SOLUTION: Iy usually takes one person 6 hours to mow a yard, another person can mow the same yard in 3 hours. How long would it take for both of them to mow the yard together?
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Question 319966: Iy usually takes one person 6 hours to mow a yard, another person can mow the same yard in 3 hours. How long would it take for both of them to mow the yard together? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! one person 6 hours to mow a yard,
another person can mow the same yard in 3 hours
..
first person does 1/6 of job in 1 hour.
second does 1/3 of job in 1hour
..
together they do 1/6+1/3 of job in 1 hour
=3/6 of the job in 1 hour
they take 6/3 hours to do a job together
= 2 hours
