Question

Barney has feet of lumber that he is going to cut into 4 equal pieces for a border on his garden

Answer 1

Each piece of lumber is 4 5/12 feet long.

Explanation:

To find the length of each piece of lumber, divide the total by 4.

Answer 2

If he has 20 2\3 and you add a 1 under 4 then you get 20 2\3 divided by 4\1.
Multiply 2\3 and 4\1 and you get 12\2, then simplify and that's 6. multiply 6 times 20 and you get 120.