Question
Two inlet pipes 'A' and 'B' can fill an empty tank in 60
minutes and 120 minutes, respectively. Another outlet pipe 'C' can empty the tank in 240 minutes. If all the three pipes are opened together, then find the time taken by them to fill the tank.Solution
Let the total capacity of the tank be 240 litres (LCM of 60, 120, and 240).
Efficiency of 'A' = 240 ÷ 60 = 4 litres/minute
Efficiency of 'B' = 240 ÷ 120 = 2 litres/minute
Efficiency of 'C' = 240 ÷ 240 = -1 litre/minute
Required time = 240 ÷ (4 + 2 - 1) = 240 ÷ 5 = 48 minutes
How many persons are sitting between Q and R, when counted clockwise of Q?
Who likes Star Maa channel?
Who sits 2nd to the left of U?
If P is related to Kanpur, S is related to Jaipur in the given arrangement, Following the same pattern how is U related to ?
i) Who is sitting in the second place on the left side of the Dani, Chintu is sitting at the fourth place on the right side.
ii) There are three ...
Six person, T, U, V, W, X and Y, are placed in a row facing towards the north (not necessarily in the same order). T sits to the immediate left of Y. X ...
What is the position of O with respect to D?
Seven persons D, E, F, G, H, I and J sit around a circular table not necessarily in the same order. All of them face inside. J sits third to the left o...
Who among the following person likes Red?
Which of the following replaces blank ___(3)___?
