Ram and
shyam
ondertook a contract to do a
do the job
job for Rs 4200. Ram alone can
in 3 weeks and Shyam in alone in U weeles. If
both of them finished the job working together
er, in what elatio should the money
divided ?​

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.