Question
Two pipes can fill a tank in 12 and 10 minutes
respectively. A waste pipe is used to empty the tank. All three pipes working together can fill the tank in 16 minutes. How much time is taken by the waste pipe to empty the full tank?Solution
Alternate Method: Let waste or leak pipe = C A B A+B+C Time 12 10 16 Let capacity of total tank = LCM (12,10 & 16) = 240 L Eff 20 : 24 : 15 So Leak can empty in 1 hr = A+B+C - (A+B) = 15 - (20+24) = -29 L Hence leak can empty the tank in = 240/29 hours
Too powerful to be defeated or overcome
A person who suffers pain or difficulty without complaining Â
Find the correctly spelt word .
Match the idioms in List-I with their meanings in List-II:
One who knows everything
Select the option that can be used as a one-word substitute for the given group of words.
Incapable of making errors.
Sanguine
In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word as your answer.
SU...
Forbid
Choose the word which is opposite in meaning to the given word
FRUGAL