Waste less time on Facebook — follow Brilliant.

What is the answer?

If A and B can do a work in 30 days, B and C can do the same work in 24 days and C and A in 20 days. In how many days the work will be completed , if they all work together?

I got 16. What do you guys think??

Here's the working:

2*(A+B+C)= 1/30+1/24+1/20= 1/8 So, A+B+C s work in 1 hour can accomplish 1/16th of the project. To complete the entire project ( 16/16) , multiply 16 with 1 hour = 16 hours. No? I got marked wrong.

Note by Venture Hi
3 years ago

No vote yet
1 vote


Sort by:

Top Newest

16 is the right answer. Sand Eee · 3 years ago

Log in to reply

16 Sand Eee · 3 years ago

Log in to reply


Problem Loading...

Note Loading...

Set Loading...