Question
A pipe can fill a tank in 18 minutes, while another can
empty it in 27 minutes. If both pipes are opened simultaneously, how long will it take to fill the tank?Solution
Work done by the filling pipe in 1 minute = 1/18 Work done by the emptying pipe in 1 minute = -1/27 Net work done in 1 minute = (1/18 - 1/27) = 1/54 Time taken to fill the tank = 1 ÷ 1/54 = 54 minutes. Correct answer: a) 54 minutes
Which among the following words cannot be formed using the letters of the given word only once?
INTEGRAL
Question : Answer :: Problem : ?
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Odd one out
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Select the correct mirror image of the given figure when the mirror is placed to the right side of the f igure at ‘XY ’.
In the following question, select the related word pair from the given alternatives.
Poem: Poetry
Who among the following live immediate below F?
- Find the missing number in the diagram given below.
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