Answer:
Scott has 9 football cards.
Explanation:
If Scott has 1/5 as many football cards as Fred, then the number of football cards Fred has times 1/5 would result in the number of football cards Scott has;
Fred * 1/5 = Scott
45 * 1/5 = 9
9
Scott has 45 * 1/5 football cards
45 / 5 can be simplified to 9
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