Question

A and B together can finish a piece of work in 12 days if a alone can finish the same work in 20 days in how much days B alone can finish it​

Answer 1

Answer:

Step-by-step explanation:

A can do a work in = 20 days

Let B can do the work in =X days

Both A and B can do the work in = 1/12 days

Therefore 1/20 + 1/X= 1/12

So 12 (X+20) = 20 X;

So 8X= 240 ; X= 30.

Therefore “B” can do the work alone in 30 - days.

Answer 2

Answer:

And=30

Step-by-step explanation:

• A+B=12Days
• A=20Days
• B=12×20/20-12
• =12×20/8
• =30