Question

In this table, x is directly proportional to y. What is the missing number?

Answer 1

36

Explanation:

The numbers on the bottom are always equal to 1.5 times the number on top.

3 x 1.5 = 4.5, 10 x 1.5 = 15, and so on. 24 x 1.5 = 36, so the missing number is 36.