top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

P can do a work in 20 days, Q can do the same in 12 days and R 16 days. Q and R start the work and leave after 6 days...

0 votes
85 views

P can do a work in 20 days. Q can do the same work in 12 days and R can do the same in 16 days. Q and R start the work and leave after 6 days. P finishes the remaining work in X days. What is the value of X?

posted Jun 16, 2018 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

2.5 days

If W is work then
W=20P=12Q=16R

Daily speed is:
P=W/20
Q=W/12
R=W/16

W=6*(W/12+W/16)+X*W/20
X=2.5

answer Jun 16, 2018 by Hanifa Mammadov



Similar Puzzles
+1 vote

P can do a work in 12 days. Q can do the same work in 8 days and R can do the same in 6 days. Q and R start the work and leave after 2 days. P finishes the remaining work in X days. What is the value of 1.1X?

0 votes

P can do a work in 19 days. Q can do the same work in 9.5 days and R can do the same in 28.5 days. Q and R start the work and leave after 3 days. P finishes the remaining work in X days. What is the value of X?

0 votes

P is able to do a piece of work in 15 days and Q can do the same work in 10 days. If they can work together for 2 days, what is the fraction of work left?

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

If 6 men and 8 women can do a piece of work in 10 days and 4 men and 7 women can do it in 12 days, how many days will 4 men and 12 women take to do half of work?

...