Question

a can do a piece of work in 4 days and B can do the same work in 5 days. find? How much work can be done by then working together in first question one day 2nd question 2nd shift question what part part of work will be left after they have worked together for two days?​

Answer 1

Answer:

1. If they work together, work done in a day will be 9/20.

2. If they work together for 2 days, 1/10th of the work will be left.

Step-by-step explanation:

Given,

A will complete a work in = 4 days

B will complete a work in = 5 days

Work by A = 1/4

Work by B = 1/5

If they work together, work done will be = (1/4+1/5)

= (5+4)/20

= 9/20

Total work = 1

Previously calculated that if they work together, work done in a day will be 9/20.

Then,

Work Done in 2 days = 9/20+9/20

= 18/20

Work left = (1-18/20)

= (20-18)/20

= 2/20

= 1/10

Hope this helps.