Irene R. answered 02/06/21
BS in Mechanical Engineering and Certified math teacher for 13 years
Hi Alexa,
I assume you mean there are 5 boxes of sports cards (not just football cards). Then.....
Since there are 5 boxes with 60 cards in each box, there will be 300 cards in total (5 x 60 = 300).
Because 3/10 of the cards are football cards, you can multiply 3/10 by 300 to find the number of football cards:
3/10 x 300 = 900/10 = 90
There will be 90 football cards.