Question

If x varies directly as y, and x = 48 when y = 16, find x when y = 5.

A) 5/3

B) 153.6

C) 15

Answer 1

15

Explanation:

x =ky

48 = k16

divide by 16

k = 3

plug k into x=ky

x=3*5

x=15

Answer 2

x =k y
48 = k* 16
k = 3

x=3*5
x=15