Question

Two volunteer groups plant tress . Group A plant the trees in clusters of 3 . Group B plant the trees in clusters of 10 . Both groups plant the same number of trees . What is the least number of clusters that group B plants ?

Answer 1

3

Explanation:

The least number of trees planted is the least common multiple (LCM) of 3 and 10. Because 3 and 10 have no factors in common, that value is their product, 3·10 = 30.

If group B plants 30 trees, they will have planted 3 clusters.