Question

One-quarter of Steve's baseball cards are from his dad's collection. Another 0.2 are from his uncle, and 0.5 are from his brother. The rest are from Steve's cousin. Thirty of the cards from his cousin are National League players; the other half are American League. How many cards are in his collection?

Answer 1

Steve got 60 cards from his cousin.

x - .25x - .20x - .5x = 60

Solve for x.