Question

A can do a work in 4 days, b in 5 days and c in 10 days find the time taken by a,b and c to do the work together​

Answer 1

Step-by-step explanation:

A's can do the work in one day = 1/4 part

B's can do the work in one day = 1/5 part

C's can do the work in one day = 1/10 part

(A's+ B's + C's) work in one day = 1/4 + 1/5 + 1/10

= 11/20

So,

All three together can complete the work in 20/11 days or

$1\frac{9}{11} days$

I hope it will help you