STEP-BY-STEP SOLUTION:
Let football cards = x
Therefore:
Baseball cards = 5x
Football cards + Baseball cards = 120
x + 5x = 120
6x = 120
x = 120 / 6
x = 20
Football cards = x = 20
Baseballl cards = 5x = 5 ( 20 ) = 100
FINAL ANSWER:
Therefore, Alison has 20 football cards and 100 baseball cards.
Hope this helps! :)
Have a lovely day! <3