Question
Ravi and Rekha, alone can complete a work in 25 days
and 50 days, respectively. They started the work together and left after 10 days such that the remaining work is completed by Rohan alone in 5 days. If the total wage fixed for completing the work is Rs. 300, then find the share received by Rohan.Solution
Let total work = 50 units {LCM of 25 and 50} So, efficiency of ‘Ravi’ = (50/25) = 2 units/day Efficiency of ‘Rekha’ = (50/50) = 1 unit/day Amount of work done by Ravi in 10 days = 2 × 10 = 20 units Amount of work done by Rekha in 10 days = 1 × 10 = 10 units Amount of work done by Rohan = 50 – (20 + 10) = 20 units Ratio of amount of work done by Ravi, Rekha and Rohan = (20 : 10 : 20) = (2 : 1 : 2) Required wages of Rohan = {2/(2 + 1 + 2)} × 300 = Rs. 120
The newly proposed regulations, which seek to address the inefficiencies within the healthcare sector by encouraging private investment and fostering co...
My sister brought a few rice while coming from the market. /No error
Read the given sentence to find out whether there are any grammatical/contextual errors in it. The errors, if any, will be in two of the phrases of the ...
The evolution of homo sapiens are popularly illustrated (1)/at a series of sketches, one progressing from (2)/a hunched and initially almost-crawling p...
Read the sentence to find out whether there is an error in it. The error, if any, will be in one part of the sentence. The letter corresponding to that ...
Either my brother or his friends is lying.
Find out the error according to the grammar and context of the given sentences. If there is no error, mark option 5 as the answer, i.e. No error. (Igno...
In the following sentence, four words or phrases have been underlined. One of them is incorrect. Select the INCORRECT word or phrase from the given opti...
Nuclear Energy, one of the best way (1)/ to generate energy through (2)/ fission and fusion, is being (3)/ misused by countries to make weapons (4)/ No ...
In each question given below, there is a sentence which has been divided into five parts. One of these parts is not grammatically correct and needs a c...
Relevant for Exams:
