Ms perez has a crate of 24 pieces of fruit. 1/2 are oranges , 1/4 are mangoes, and 2/8 are pineapples . how many oranges are there? how many mangoes are there? how many pineapples are there?

12 oranges
6 mangoes
6 pineapples

You start off this problem by dividing 24 by 2 to get the number of oranges. Then divide 24 by 4 to get mangoes. You get 6. The only one left is pineapple. If you reduce the fraction 2/8 then you get 1/4. So again divide 24 by 4. You get 6 again.

12+6+6=24