Question
Pipes P, Q, and R can fill a tank in 15 hours, 10 hours,
and 30 hours respectively. If the efficiencies of pipes P and Q are each reduced by 40% of their original efficiency and all three are opened together, find the total time taken by them to fill the tank.Solution
ATQ, Let the capacity of the tank (LCM of 15, 10, and 30) be 30 liters. Efficiency of pipe P = 30/15 = 2 liters/hour Efficiency of pipe Q = 30/10 = 3 liters/hour Efficiency of pipe R = 30/30 = 1 liter/hour New efficiency of pipe P = 2 Ă— (60/100) = 1.2 liters/hour New efficiency of pipe Q = 3 Ă— (60/100) = 1.8 liters/hour Total efficiency = 1.2 + 1.8 + 1 = 4 liters/hour Required time = 30 / 4 = 7.5 hours
Select the most appropriate ANTONYM of the given word.
Humane
 Fill in the blanks with the appropriate antonym of the word in Italic from the options given:
The optimistic forecast was replaced by a more ...
Divya said to her Amma, “Mohit will leave for her village tomorrow.”
 Fill in the blanks with the appropriate antonym of the word in Italic from the options given:
The results were favorable , whereas his previo...
- Select the most appropriate ANTONYM of the bold word in the given sentence.
The soldiers displayed immense courage on the battlefield.
... My neighbour’s son is very mischievous and always getting in everyone’s hair.
The cultivation of grapevines
Pragmatist
An independent person or body officially appointed to settle a dispute
My favourite candidate gave up before the contest was even closed.
Relevant for Exams:
