According to Question; Efficiency of pipe ‘A’ = (210/21) = 10 litres/hour Efficiency of pipe ‘C’ = 10 ÷ 1.25 = 8 litres/hour Efficiency of pipe ‘B’ = 8 × 1.5 = 12 litres/hour Time taken by all the pipes together to fill the tank = {210/(10 + 8 + 12)} = (210/30) = 7 hours Or, time taken by all three pipes together to fill the tank = 7 × 60 = 420 minutes
Find the missing number from the alternatives.
Five friends, Purva, Roshan, Vibhor, Luna and Anuj, are wearing five different coloured T-shirts, red, black, purple, yellow and blue. Each of the frien...
Find the upcoming numbers in this series.
19, 28, 46, 82, 154,?
From the given option figures, select the one in which the question figure is hidden/embedded. (rotation is not allowed)
In a code language, if PEN is written as 17717, then how will CAP be written in the same language?
X # Y means 'X is the brother of Y'
X @ Y means 'X is the daughter of Y'
X & Y means 'X is the husband of Y'
X % Y means 'X is the ...
Eight people E, H, M, P, S, T, Y and Z are sitting in a straight line. All of them are facing North. E sits fourth from one of the extreme ends of the...
Which of the following Venn diagram best represents the relationship between birds, animals and crows?
Select the correct combination of mathematical signs that can sequentially replace ‘A’ and balance the following equation.
28 A 14 A 12 A 6 A...
Select the term from the given alternatives which can come in place of the question mark (?) in the following series.
GNW-5, HQA-9, ITE-17, JWI-33, ?
