Question

Son of Hannah‘s plants need water every day some need water every other day and some need water every third day if she what is an all today how many days will it be before she waters them all again

Answer 1

3 days

Explanation:

Some of Hannah‘s plants need water every 1 day.

Some need water every third(3) day.

If she waters them all today, we are to determine when next she will waters them all again.

To do this, we find the lowest common multiple of 1 and 3.

L.C.M of 1 and 3=3

Therefore, in 3 days time, she will water them all again.