Marcia collected a number of used DVDs for the sale. There were 12 action movies, 7 comedies, and 8 animated films. she decided to put them on sale at 3 for $5. how many groups of 3 DVDs went on sale? How much money did they bring in?

2 answers

12 + 7 + 8 = ?

? x 5 = $ How much money they brought
I'll be glad to check your answer.