Question

The variable y is directly proportional to the variable x. If y = 32 when x = 20, what is the value of x when y = 40?

Answer 1

25 is the correct answer 32/20 is 1.6 and 40/25 is also 1.6

Answer 2

25

Explanation:

20/32 = 0.625

40 x 0.625 = 25

You can check by doing 25/40 and see if you get the same proportion (x/y)