Kamalesh worked 27days and completed 75 percent of a particular work. Then he took the help of Lucifer and they together completed the remaining work in 5 days. How long will Lucifer take to complete the same work,if he is working alone
Choose the correct answer.
A) 10 DAYS B) 40 DAYS C) 45 DAYS D) 47 DAYS E) 49 DAYS
Kamlesh completed 75% of the work in 27 days. So,   Work rate of Kamlesh = 75/27 = 2.775 per day.   Kamlesh and Lucifer complted 25% remaining work in 5 days.Then   Work rate of Kamlesh and Lucifer, together = 25/5= 
<gadget id="calculator">25/5</gadget>
<output>5</output>
5% per day.   So, Work rate of Lucifer= 5 - 2.77= 
<gadget id="calculator">5 - 2.77</gadget>
<output>2.23</output>
2.23% per day.   To complete 100% work alone, Lucifer needs,= 100/2.23 = 45 days.   ANSWER : OPTION 45 DAYS
<result>C</result>
Kamalesh worked 27days and completed 75 percent of a particular work. Then he took the help of Lucifer and they together completed the remaining work in 5 days. How long will Lucifer take to complete the same work,if he is working alone