Question

What is solve c: 6/15 = 2/c

Answer 1

it's a proportion.
6*c=15*2
6c=30
6/6=30/6
c=5

Answer 2

`(6)/(15)` =
`(2)/(c)` Cross multiply (6 x c and 15 x 2)
6c = 30 Divide both sides by 6
c = 5