Al's garden is 18 ft long and 30 feet wide he wants to put fence post the same distance apart along all sides of the garden what is the greatest distance apart that al can place the fence post

6 ft

Step-by-step explanation:

You need to find the greatest common factor between 18 and 30. These numbers can be expressed as follows (using multiplication of prime numbers) .

18 = 2*3*3

30 = 2*3*5

2*3 = 6 appears in both cases and is the greatest common factor; therefore, 6 feet is the greatest distance apart that Al can place the fence post