Juanita runs every third day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim

Question

3 years ago

15

again on the same day?

2 answers:

AleksAgata [21] · Answer 1 · 2022-02-13T01:42:57+03:00

7 0

We are looking for the least common multiple of 3 and 5 which is 15. On the 15th day after today, she will do both on the same day.

Ber [7] · Answer 2 · 2022-02-12T23:52:05+03:00

we know that

The least
common multiple (LCM) of two or more numbers is the least

number, other than zero, that is a multiple of all the numbers.

In this problem, we are looking for the least common multiple of $3$ and $5$

So

Multiply $3$ by $5$

$LCM=3*5\\ LCM=15$

therefore

On the $15th$ day after today, she will do both on the same day

the answer is

$15 days$