Reduce 36/45 to lowest terms and write the denominator in the blank

What are different types of statistical programs

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.