Answer:
The cost of each DVDs is $ 13 .
Explanation:
Given as :
The cost of earphones = $ 10
The number of DVDs bought = 3
The total cost of both items before tax = $ 49
Let The cost of each DVDs = $ x
So, According to question
The cost of earphones + The cost of 3 DVDs = $ 49
Or, $ 10 + 3 × x = $ 49
Or, 3 × x = $ 49 - $ 10
Or, 3 × x = $ 39
∴ x =
![(39)/(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/gjohl32jdq9pwkxvdegrqfkwgq06embbad.png)
I.e x = $ 13
Hence The cost of each DVDs is $ 13 . Answer