Question
Pipe 'M' and 'N' can fill a tank in 2 hours and 1 hour
20 minutes respectively. 'M' is opened alone. After 30 minutes, 'M' is closed and 'N' is opened. Find the time taken by 'N' to fill the remaining tank.Solution
Let the total capacity of tank be 240 litres (LCM of 120 and 80) Efficiency of 'M' = (240/120) = 2 litres/minute Efficiency of 'N' = (240/80) = 3 litres/minute Tank filled by 'M' = 2 × 30 = 60 litres Remaining part of the tank = 240 − 60 = 180 litres Required time = (180/3) = 60 minutes
Who is the author of the book “New Wealth of Nations”?
Which of the following is NOT typically a result of an earthquake?
Who has been appointed as the MD and CEO of National Stock Exchange (NSE)?
Which of the following gases is used to artificially ripen fruits like bananas and mangoes?
Who has won the Syed Mushtaq Ali Trophy 2021-22?
Who among the following won the Men's Singles title in Australian Open?
On which date will National Technology Day be celebrated in India?
Who was the first Indian woman governor?
Pravasi Bharatiya Divas is observed by Government of India on:
The second most abundant element in the earth’s crust is
Relevant for Exams:
