If x is directly proportional to y and x=18 when y=12, what is x when y=20?

Problem Statement

x over y is constant. Eighteen over twelve simplifies to three halves. For y equal twenty, x equals three halves times twenty equals thirty.

SolutionRead Only

x/y = 18/12 = 3/2 ⇒ x = (3/2)×20 = 30

This question appears in the following practice sets: