HELP EASY MATH CLICK THIS PLEASE ANSWER LATE DUE LAST WEEK EASY

The total number of dental clinics total for the last 12 months was recorded

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.

Devaughn's age is three times sydney's age. the sum of their ages is 96. what is sydney's age?