Question

If y varies directly with x and y=2 when x=15. Find x when y=8.

My options are:
x = 60
x = 3.75
x = 240
x = 150

Answer 1

x=60

Explanation:

Answer 2

Since the two numbers vary directly, if Y is quadrupled, X will do the same. 2 times 4 is 8, 15 times 4 is 60.

X = 60.

Hope that helps!! :)