Question

: Kevin is planting 15 bushes and 9 trees in rows. If he wants all the rows to be exactly the same, with no plants left over, what is the greatest number of rows Kevin can plant? You can use a factor tree or list the factors to help you

Answer 1

The greatest number of rows that can be planted, and have nothing left over, would be 3

Explanation:

Find the greatest common factor (gcf) of 15 and 9

15: 1 3 5 15

9: 1 3 9

In this case, the gcf of 15 and 9 would be 3.

Answer 2

There will be 5 rows of bushes.

There will be 3 rows of trees.

Explanation:

Kevin is planting 15 bushes and 9 trees in rows.

He wants all the rows to be exactly the same, with no plants left over.

So, the greatest number of rows Kevin can plant will be given by finding the GCF of 15 and 9.

15 = 3 x 5

9 = 3 x 3

GCF = 3

There will be
`15/3=5` rows of bushes.

There will be
`9/3=3` rows of trees.