Question

If x varies directly as y, and x = 28 when y = 4, find x when y = 8.

Answer 1

Answer: x=56

x/y 28/4=x/8

reduce 28/4 to 7/1

7/1 = x/8

cross multiply

x=56

Explanation:

Answer 2

to find the value of x

x=(8x28)÷4