Question

Suppose y varies directly with x, and y = 24 when x = 8. What is the value of y when x = 10?

Answer 1

Then Y=KX, then k=24÷8=3
Then y=3*10=30

Answer 2

as y= kx putting y= 24 for x = 8 we get k as 3

so y=3x

now if x=10, we get y=30.