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 ?​

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?