Question

allison has 5 times as many baseball cards as football cards.in all,she has 120 baseball and football cards.how many baseball cards does she have?

Answer 1

This is a system of equations problem. The variable for baseball cards will be b, and the variable for football cards will be f.

f=5b
f+b=120

Use substitution to solve the problem. Substitute 5b in for f, for they equal the same thing.

(5b)+b=120
6b=120
b=20

She has 20 baseball cards.

Answer 2

If Allison has x football cards she will have 5x baseball cards. 
So x + 5x = 120 
6x = 120 
x = 120/6 = 20 
Allison 5x baseball cards so 20*5 = 100 baseball cards