<PRE><B>Question 840616</B>
Given Jared can do a work 3 times as fast as Kevin then, Jared = 3 * Kevin  --- 1.

Together they can do the same work in 1 hour.
Jared + Kevin = 1 
3 kevin + Kevin = 1
4 kevin = 1
Kevin = 1/4

therefore Kevin can do the work in  4 hours

When Kevin = 1/4,
the Jared = 3 * Kevin
Jared = 3 * 1/4
Jared = 3/4

therefore Jared can do the work in 4/3 hours that is 1 1/3 hours.

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