A gardener bought 450 apple trees. He wants to plant 15 trees in each row. How many rows can he plant?

Given:

Total no. of apple trees = 450

No. of trees planted in one row = 15

To find:

No. of rows to plant trees.

Solution:

Total no. of apple trees = 450

No. of trees planted in one row = 15

No. of rows = $450÷15=30$

Let's check it

No. of trees planted in one row = 15

No. of rows = 30

Total no. of apple trees = $30\times 15=450$

The no. of rows required to plant 450 apple trees is 30.

Therefore option(A) is correct.