Question

Bridget has swimming lessons every fifth day and diving lessons every third day.If she has a swimming lesson and diving lesson on may 5,when will bee the date on which she has both swimming and diving lessons

Answer 1

Explanation:

she had both on May 5

swimming lessons every 5th day

5,10,15,20

diving lessons every 3rd day...

3,6,9,12,15

so they both have a common multiple of 15

so fifteen days after May 5 = May 20 <==