Question
An inlet pipe can fill an empty tank in 50 minutes
whereas an outlet pipe can empty the fully filled tank in 75 minutes. Find the time taken by both the pipes together to fill half of the empty tank.Solution
Let the total capacity of tank be 150 litres (LCM of 50 and 75)
Efficiency of inlet pipe = (150/50) = 3 litres/minute
Efficiency of outlet pipe = (150/75) = -2 litres/minute
Required time = (0.5 × 150) ÷ (3 - 2) = 75 minutes
Select the option in which the given figure is embedded. (Rotation is not allowed).
Read the directions carefully and answer the following questions.
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What comes in place of ___(B)___?
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Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row: 42, 54, 39
Second row: 78...
Statements: R > T = H > E, N ≤ W > S > T
Conclusion:
I. T ≤ N
II. W > EÂ Â
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