Question

Please please help me out! :)

Answer 1

x = 24

Explanation:

Given that y varies directly with x the the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 10 when x = 8, then

k =
`(y)/(x)` =
`(10)/(8)` = 1.25, thus

y = 1.25x ← equation of variation

When y = 30, then

30 = 1.25x ( divide both sides by 1.25 )

x = 24