Question

If y varies directly as x, and x= 8 when y= 24, what is the value of x when y= 48

a) 17
b) 14
c) 16
d) 15

Answer 1

Notice that 24 is half of 48.

48/24= 2

So, we need to do the same for the x variable.

8*2= 16

"C" 16 would be your answer.

I hope this helps!
~kaikers

Answer 2

8/24 = x / 48
cross multiply
(24)(x) = (8)(48)
24x = 384
x = 384/24
x = 16 <===