Question
Pipe ‘A’ can fill a tank in 20 hours while pipe
‘B’ takes 32 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 14 hours pipe ‘B’ is also opened. In how much time will the tank get filled completely?Solution
Let the total capacity of the tank be 160 units Efficiency of pipe ‘A’ = 160/20 = 8 units/hour Efficiency of pipe ‘B’ = 160/32 = 5 units/hour Tank filled in 14 hours = 14 × 8 = 112 units Therefore, required time taken to fill the remaining tank = (160 – 112)/(8 – 5) = 16 hours Therefore, total time taken = 14 + 16 = 30 hours
Who among the following faces Umesh?
Who among the following sits 3rd to the right of the one who likes Bata?
How many persons are sitting between S and D when counted from left of D?
How many seats are between M and S when counted from the left of S?
Eight friends, A, B, C, D, E, F, G and H, are sitting in a straight line, all facing the north. F is sitting between D and G. B is sitting between H and...
What is the position of R with respect to the one who sits to the immediate right of W?
Seven persons—T, U, V, W, X, Y and Z are sitting along a circle facing the centre. T is between Z and W. V is second to the right of W and is between...
If M sits immediate right of V, then what is the position of M with respect to R?
Which of the following statement is true regarding R?
Statements:
All Rose are Lotus
Some Lotus are Tulip
All Tulip are Lily
Conclusions:
I. Some Lily are Rose
II. No Rose is a Lily
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