Question

A can do a piece of work in 20 days, B in 30 days and C in 40 days . They start working together. A works for 2 days and leaves B leaves 4 days before the work finishes. How long does the work last​

Answer 1

Answer:

Answer is 18 days

Step-by-step explanation:

Let the work get done in x days

Total amount of work done by A, B, & C =

6/20 + (x-6) /30 + x/60 = 1

18 + 2x-12 + x = 60

3x = 54

x = 18 days ANSWER