8/2z=15/60 .solve proportion.

asked Apr 23, 2015 207k views

4 votes

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3 votes

$(8)/(2z)=(15)/(60)\\ (4)/(z)=(1)/(4)\\ z=16$

Boris Zbarsky answered Apr 24, 2015

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3 votes

$(8)/(2z)=(15)/(60)\ \ \ \ \ |cross\ multiply\\\\2z\cdot15=8\cdot60\\\\30z=480\ \ \ \ |divide\ both\ sides\ by\ 30\\\\\boxed{z=16}$

Kirin Yao answered Apr 28, 2015

8.6k points

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