Question

Marta uses 1 piece of paper and 1 piece of ribbon to make kites. The paper comes in packs of 3 and the ribbon comes in packs of 4. What is the least number of kites Marta can make without any supplies left over?

Answer 1

12 kites because 12 is the least common multiple of 3 and 4

Answer 2

Paper: 3/ 3/ 3/ 3
Ribbon: 4/ 5/ 6/ leftover 3
Kites: 3/ 3/ 3/ 3

Leftover: 1/ 2/ 3/ 0

Make a graph like that that solves the problem.