Question
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20
minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all three pipes are opened together then what is the time taken to fill 50% of the cistern?Solution
Let the capacity of the cistern = 60 units Then, efficiency of pipe ‘A’ = 60/20 = 3 units/minute Efficiency of pipe ‘B’ = 60/15 = 4 units/minute Efficiency of pipe ‘C’ = 60/12 = 5 units/minute So, combined efficiency of pipes ‘A’, ‘B’ and ‘C’ = 3 + 4 – 5 = 2 units/minute 50% of the cistern’s capacity = 30 units Therefore, time taken by all 3 pipes together to fill 50% of the cistern = 30/2 = 15 minutes
As parts of the efforts of the congress to evolve a consensus to its allies over a presidential candidate, senior party leader and Defence Minister call...
1. Instead of simply digitizing a paper-based process for registering and operating drones, India has formulated an all-digital process.
2. Res...
(A) investors are advised to diversify their portfolios
(B) as it helps in mitigating risks
(C) the market is volatile,
(i) thus
(ii) therefore
(iii) so
Identify the segment in the sentence that contains a grammatical error.
I immediately realised that my deductions had being all wrong.
It farther stipulates that retail sales outlets be set up only in cities with a population of more than 10 lakh.
...In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate optio...
A typical agraharam house comprises of a stone bench in the verandah and an open courtyard in the middle of the house.
Read each sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence. Mark the part with the error as...
Given below is a sentence with or without an error. The error, if any, is in one part of the sentence. Choose the correct part which contains the error...
Given below is a sentence with an error. The error is in one part of the sentence. Below the sentence are given the options containing the parts of the...
Relevant for Exams:
