Question

A, B and C working together can finish a work in 3 days A can do it alone in 6 days and B can do it in 71/2
days. In how many days can C alone finish the work​

Answer 1

Step-by-step explanation:

After A worked for 8 days, B for 12 days C takes up and finishes it alone in 6 days. ... C worked for 6 days --> C finished 6/18=1/3 of the total work. Other options won't

Answer 2

Answer:

Work done by (A+B)'s in 1 day

work done by (B+C)'s in 1 day

Let C does a work in x days

Then work done by C in a day