Question

If 5/6 of the two dozen juice boxes are strawberry how many of the juice boxes are strawberry

Answer 1

One dozen is 12. 6x2=12
So you multiply 5/6 by 2 to get 10/12.
Since there are 24 in two dozen and 12x2=24 you multiply 10/12 by 2 to get 20/24.

Answer 2

two dozen juice boxes are 24 juice boxes. 5 from each six are strawberry. There are 4 groups of 6 in the 24 juice boxes. 5x4=20. 20 of the juice boxes are strawberry.