Question

please solve my questions
please don't fake answer​

Answer 1

1 work done by A in 20 days.

1. In 1 day,work done is 1/20 of work.
2. In 5 days, work done is 1/20 ×5=1/4 of work
3. 1 work done by B in 10 days
4. In 1 day, work done is 1/10 of work
5. In 5 days , work done is 1/10×5=1/2 of work
6. In 5 days, work done by both is 1/4+1/2=3/4
7. Remaining work is 1-3/4=1/4 (ans)