Question

Ms. Everett found birthday cards in packs of 6 and envelops in packs of 9. If she wants to have the same number of cards and envelops, what is the minimum number of each she can purchase?

Answer 1

you need to do this LCM(least common multiples)

6,12,18,24,30,36
9,18,27,36,45,54

18 is your answer.

Answer 2

The minimum she can buy for the pack of 6 is 3 and the minimum for the pack of 9 is 2.