Question

8. A and B together can complete a work in 3 days. They start
together, but after 2 days B left the work. If the work is
completed after 2 more days, B alone could do the work in
1) 5 days 2) 6 days 3) 9 days 4) 10 days
​

Answer 1

Answer:

Answer is 2) 6 days

Step-by-step explanation:

(A+B)'s one day's work = 13

part

(A+B) works 2 days together = 23

part

Remaining work = 1−23

= 13

part

13

part of work is completed by A in two days

Hence, one day's work of A = 16

Then, one day's work of B = 13−16

= 16

So, B alone can complete the whole work in 6 days.

Answer 2

Answer:

6 days

Step-by-step explanation:

The explanation is in the picture