Answer:
Emilio will have both activities again 90 days from Saturday.
Step-by-step explanation:
Emilio's family volunteers at the local soup kitchen every 30 days.
Emilio has swimming lessons every 9 days.
30 = 2 x 3 x 5
9 = 3 x 3
LCM = 2 x 3 x 3 x 5 = 90
So, Emilio will have both activities again 90 days from Saturday.
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