Question
Time taken by pipe 'A' to fill a tank is 40 minutes.
When both pipes 'A' and 'B' are opened together, the tank gets filled in 20 minutes. Find the time taken by 'B' to fill the tank alone.Solution
Let the capacity of the tank be 120 litres (LCM of 40 and 20).
Efficiency of 'A' = (120/40) = 3 litres/minute
Combined efficiency of 'A' and 'B' = (120/20) = 6 litres/minute
Efficiency of 'B' = 6 - 3 = 3 litres/minute
Therefore, required time = (120/3) = 40 minutes
Hence, the answer is 40 minutes.
Choose the most appropriate option for lank no. 1
From the following select the appropriate word to replace number (48) in the above passage.Â
Find the appropriate word.
 Select the most appropriate option to fill in blank
Which of the following options is most suitable for blank 1?
Fill in blank 7 with the appropriate word from the options.
Fill in blank 46 with the most appropriate word.
Which of the following options is most suitable for blank 5?
Fill in the blank with the most appropriate word.
- Choose the most appropriate option to fill in blank number 2.
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