Work Step by Step
Jared takes 36 min Brother takes 48 min $1/36*x+1/48*x=1$ $x/36 + x/48 = 1$ $48x/48*36+36x/36*48 = 1$ $84x/36*48=1$ $84x/1728 = 1$ $84x = 1728$ $84x/84 = 1728/84$ $x=20.57$
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