Question
Pipe ‘A’ can fill a tank in 12 hours whereas pipe
‘B’ can empty it in 30 hours. If both pipes are opened together while pipe ‘B’ is closed after 5 hours, then find the time taken by pipe ‘A’ to fill the rest of the tank.Solution
ATQ; Let the capacity of the tank be 60 litres. {LCM (12 and 30)} Efficiency of inlet pipe ‘A’ = (60/12) = 5 litres/hour Efficiency of outlet pipe ‘B’ = (60/30) = 2 litres/hour Combined efficiency of both pipes = (5 – 2) = 3 litres/hour Required time = {60 – (3 × 5)} ÷ 5 = 9 hours
QEWIUT
In a certain code language, 'BRIGHT' is coded as ' AHHGSU’. How will 'PLAYER' be coded in the same language?
In a certain code, 'bg vd pl' means 'concentrated its centre', 'bg xd mn' means 'spins centre axis' and means 'with its angular'. Which digit stands fo...
In a code language, ‘CASHEW’ is coded as '78', ‘BANDITS’ is coded as ‘63’. What is the code for ‘RECIPE’ in that code language?
...A certain code language, ‘PEN’ is written as ‘102’. How will ‘NAME’ be written in that language?
In a certain code language ‘PRISON’ is written as 'QSRHPO'. What will be the code for ‘HEALTH’ in that language?
Which of the following is the code of ‘to’?
What is the code for the word “its” ?
Which of the following may be the code for “All these now”?
If in a certain code, 'SUMMIT' is written as 'KSQRGK', then how will 'UMPIRE' be written in that code?
