Question

if a can finish work in 8 days,b can finish work in 13 days and c can finish work in 9 days. if they work together how many day will they take to finish the work

Answer 1

Step-by-step explanation:

a can finish work in 8 days

b can finish work in 13 days

c can finish work in 9 day

a+b+c=8+13+9

3=30

30÷3=10

if they work together 10 day will they take to finish the work

Answer 2

Step-by-step explanation:

A's one day work =1/8

B's one day work=1/13

C's one day work =1/9

(A+B+C)'s one day work=1/8+1/13+1/9

=(add all of them)