Question

Eli has a collection of football and baseball cards. In all, he has 360 cards in his collection. Twice the number of baseball cards is 30 less than three times the number of football cards. How many more baseball cards than football cards does Eli have?

Answer 1

150 football cards

210 baseball cards

Explanation:

b + f = 360

2b = 3f - 30

Change second equation to be: 2b - 3f = -30

Multiply first equation by -2 to get: -2b -2f = -720

Add to get: -5f = -750

f = 150

b = 360-150 = 210