If 60% of a number is equal to three-fourth of another number, what is the ratio of the first number to the second number?

3 : 7 2 : 5 7 : 3 5 : 4

5 : 4

60% of x = 75% of y ⇒ 4x = 5y ⇒ x : y = 5 : 4.