During February, Kevin will water his ivy every third day and water his cactus every fifth day. On which date will Kevin first water **both** plants together?

The answer is the 15th.
If Kevin waters his ivy every third day, and his cactus every fifth day, you want to find the number that can be divided by both 3 and 5. The first day in the month where this can occur is the 15th (which can be divided by both numbers).

Answered by kmatras1 | 2024-06-10

I think it's 15 because 15 is the only LCM or least common multiple of 3 and 5.

Answered by huiyinxup2hepo | 2024-06-11

Kevin will first water both his ivy and cactus together on February 15. This is the smallest common day when both watering schedules align. He waters the ivy every third day and the cactus every fifth day.
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Answered by kmatras1 | 2024-10-02