Two numbers are respectively 20% and 50% more than a third number. The ratio of two numbers is?

2:3

3:4

4:5

5:6

Let third number = x

First number = 120/100 x = 6x/5

Second number = 150/ 100x = 3x/2

Ratio of two numbers = 6x/5 : 3x/2 = 12x : 15x = 4:5