Question

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

Answer 1

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

Answer 2

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