Question
‘A’ alone can do some work in 10 days. ‘B’ and
‘C’ together can do the same work in 4 days. If ‘B’ is half as efficient as ‘A’, then find the time taken by ‘C’ to complete the work alone.Solution
Let the total work be 20 units. {LCM (10 and 4)} So, efficiency of ‘A’ = (20/10) = 2 units/day So, efficiency of ‘B’ = (2 x 0.5) = 1 unit/day Efficiency of ‘B’ and ‘C’ together = (20/4) = 5 units/day So, efficiency of ‘C’ = 5 – 1 = 4 units/day So, time taken by ‘C’ to finish the work alone = (20/4) = 5 days
Break a leg
During the winters the polar bear goes without food by nearly five to six months.
In each of the following questions, an idiomatic expression/a proverb has been underlined – followed by four alternatives. Choose the one which best ...
Put the cat among the pigeons
Fill in the blank given below using the correct idiom.
Despite his initial doubts, joining the painting class turned out to be ______________...
Spin your wheels
I remember him saying that a juvenile judge without the support of a social worker would be like a fly out of basket .
He had no intention of letting the Foreign Secretary steal any of his blunder .
- Identify the words that are similar in meaning to the phrase in bold. If none of the options conveys the correct meaning, mark (5) as your answer. The opti...
After hearing about the company's closure, the news of a minor bonus was no cold comfort.
Relevant for Exams:
