Question

If the mean of the numbers 2x,3x,4x and 3x is 12,then the sum of the numbers is?

Answer 1

Answer:

C. 48.

Step-by-step explanation:

If the mean is 12, then 12 must be 2x, 3x, 4x, and 3x divided by 4.

      --> $\frac{2x+3x+4x+3x}{4}=12$

      --> $\frac{12x}{4}=12$

      --> $\\3x=12$

      --> x=4

Add: 2x+3x+4x+3x=8+12+16+12=48