Question
‘P’ can complete a project in 12 days. ‘Q’ is
40% less efficient than ‘P’. Working together, ‘P’, ‘Q’ and ‘R’ can finish the job in 5 days. In how many days will ‘R’ finish the job working alone?Solution
ATQ,
Time taken by ‘P’ to complete the whole work alone = 12 days Time taken by ‘Q’ to complete the whole work alone = 12 / 0.6 = 20 days Let the total work = 60 units (L.C.M of 12 and 20) Efficiency of ‘P’ = 60 / 12 = 5 units/day Efficiency of ‘Q’ = 60 / 20 = 3 units/day Let the efficiency of ‘R’ be x units/day According to the question, (5 + 3 + x) × 5 = 60 Or, 5x = 60 – 25 – 15 Or, x = 20 / 5 = 4 units/day Time taken by ‘R’ to complete the whole work alone = 60 / 4 = 15 days
In each question below, a sentence is given with a part of it printed in bold type. That part may contain a grammatical error. Each sentence is followe...
There have been reports that most of the 300 persons who were witness to the incident have flee the village to avoid questioning.
In the following questions, sentences are given with a part in bold. The given phrase in bold may or may not contain an error. If phrase has error, one...
We have denied our young the benefits of tapping into indigenous knowledge replete of time-tested techniques for improvin g non-cognitive intelli...
Given below is a sentence with one blank. Below the sentence are given four words among which one word might fill the blank. If none of the words fill ...
The candidate secured an impressive victory, receiving more than the number of votes pledged to him, signifying acceptance levels that go away the parti...
Whenever his family or friend were around he became extremely energetic and hyper.
For several decades, successful governments in Karnataka have attempted to make it necessitates for students to learn Kannada as a subject.
...More than 100 police officers were being deployed at the venue , along with an armed posse from the Police.
We generally select one of the most intelligent student of the school for this award.
Relevant for Exams:
