Question

Robbie has 3 times as many songs as Mandi in his playlist. If Robbie has 3x + 15 songs, how many songs does Mandi have in her playlist?

Answer 1

x + 5

Explanation:

Robbie has 3 times as many songs as Mandi ("oh, Mandy !" - Barry Manilow).

that means Mandi has 1/3 of the songs of Robbie.

so, she has

(3x + 15)/3 = 3x/3 + 15/3 = x + 5 songs