Question

suman can do a piece of work in 50 days he work at it for 10 days and then sonu takes 20 days to finish it if they work together then in how many days will the be able to finish the work​

Answer 1

Answer:Let ,work done by A be 1 unit per day

For 20 days=20 units of work is done.

For 5 days=5 units of work is done .

Outoff 20 days ,15 days work of A is done by B in 10 days

So, per day work of B =15/10=1.5

And we had assumed per day work of A is 1 unit.

So, together per day work of A and B is 1+1.5=2.5

No. Of days A and B if together work=

Total unit of work/per day work of both

20/2.5=8