Question

Maria and Emma each have movie DVD collections.

The number of DVD's in Maria's collection can be represented by x
The number of DVD's in Emma's collection is 3 times the number in Maria's collection.
The total number of DVD's in both collections is 144


What is x the total number of DVD's in Maria's collection?




A=108


B=48

C=72


D=36

Answer 1

D = 36

Explanation:

x = Number of DVDs in Maria's collection

So, number of DVDs Emma has is 3x

Given,

x+3x=144

4x=144

x=144/4 = 36