Question
Pipe 'A' can fill a tank on its own in 14 minutes. When
pipes 'A' and 'B' are both opened at the same time, the tank is filled in 18 minutes. Determine how long it would take for pipe 'B' alone to drain half of the tank's capacity.Solution
Let the total capacity of the tank = L.C.M of 14 and 18 = 126 units So, efficiency of pipe 'A' alone = 126 ÷ 14 = 9 units/minute Combined efficiency of pipes 'A' and 'B' = 126 ÷ 18 = 7 units/minute So, efficiency of pipe 'B' alone = 7 - 9 = -2 units/minute (outlet) So, time taken by pipe 'B' alone to empty 50% of the cistern = (126 X 0.5) ÷ 2 = 31.5 minutes. Hence, option a.
We are concerned about the plight of the normal man.
Media is Running agenda-driven debates and Kangaroo Courts, those are not healthy for democracy.
You are presented with a sentence which is divided into five parts. The part in bold is grammatically correct. Out of the remaining four parts, three ar...
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...
In the following questions, each sentence is divided into four parts, which are labelled a, b, c, and d, one of these parts may contain an error. If th...
The quality of goods are very good but the shopkeepers have not been able to deal with the falling demand and rising cost of production of the commoditi...
The Police has arrested the accused, (A) / but my mentor and boss cleared the air (B) / and tried to get the accused released, (C) / thus earning them p...
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 opti...
When another tornados hit (A)/an Amazon warehouse in (B)/the southern Illinois city of Edwardsville (C)/around 100 workers were trapped inside (D).
Read each sentence to find out whether there is any grammatical or idiomatic error. The error, if any, will be in one part of the sentence. The number ...
Relevant for Exams:
