R & K can finish a work in 40 & 45 days respectively, after working together for few days, K left & R finished rest of the work in 23 days. After how many days K left. Guys answer with explanation?
R does 23/40 remaining 17/40 done by both, both completes work in 360/17 ,so complete remaining work 17/40 in 360/17* 17/40=9
Yes i m right as by mistake i write 15 days instead of 9 days in my explaination......
Heart..... 9 is correct
Vicky.... your explanation pls
Sorry by mistake i write 15 instead of 9
Yup its 9 days
Answer is k left after 15 days
Explaination-first calculate their individual capability of work
Then calcuate total work done by R alone in 23 days which is 9*23=207
Total work done=360(LCM OF 40&45)
Find out the remaining work that has to done by R & k which is 157
Now just divide 157 by 17(sum of R &K ability) to get the answer