Question
A and B can complete a work in 40 and 60 days
respectively. They started a work which is to be completed in 20 days. But it was found that they are lagging behind the schedule, so a third person C was appointed after 12 days to complete the work on time. In how many days C can alone complete the work?Solution
A and B worked for 20 days. In 1 days, they could have completed work (1/40 + 1/60) = 1/24 So, in 20 days, they did (1/24) *20 = 5/6 This means C did 1 – 5/6 = 1/6 of work in 8 days So, he can do work alone in 48 days.
India's first solar powered boat will be operated in which river?Â
The transport route connecting the Srinagar with Leh crosses the high mountain ranges at the:
When is International Democracy Day celebrated every year?
What entity publishes the World Press Freedom Index?
Who is the author of the book “Why can’t Elephant be red” ?
Who won the men’s doubles champions in the Indonesia Open 2023?
Which country/countries are the hosts of Asia Cup 2023 Cricket tournament?
Which state recently launched the CM-SATH scheme to support the educational advancement of its brightest students?
Deen Dayal SPARSH Yojana is related with which field?
Which of the following pairs is not correctly matched?
