top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

    Get Free Puzzle Updates

Facebook Login
Site Registration

A can lay railway track between two given stations in 16 days............Then, C alone can do the job in how many days ?

–1 vote
199 views

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only.
Then, C alone can do the job in how many days ?

posted Dec 9, 2015 by Nikhil Pandey

Share this puzzle
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

2 Answers

0 votes
 
Best answer

C alone can do the job in 48/5 = 9.6 days!
Let's say C can do the work alone in X days then;
1 day of work combined = 1/16+1/12+1/X = 1/4
by solving, we get 3X+4X+48 = 12X >> 5X=48 >> X=48/5 = 9.6 days.

answer Dec 11, 2015 by anonymous
0 votes

A lays 1/16 distance per day; B lays 1/12 distance per day. With C, they lay 1/4 distance per day. So:
1/16 +1/12 + 1/C=1/4
3C+4C+48=12C
5C=48
C=48/5 days that it would take for C to do the job alone
☺☺☺☺

answer Jan 12 by anonymous



Similar Puzzles
0 votes

X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?

+1 vote

Dhoni can do a piece of work in 80 days. He works at it for 10 days and then Virat alone finishes the work in 42 days.
How many number of days would be taken by the two together to finish the work.

+1 vote

If A men working A hours a day can do A units of a work in A days, then how many units of work can be completed by B men working B hours per day.

+1 vote

Aadesh alone can do a piece of work in 6 days and Bhavesh alone in 8 days. Aadesh and Bhavesh undertook to do it for Rs. 3200. With the help of Chetan, they completed the work in 3 days.

How much is to be paid to Chetan?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...