Question
A pipe fills a tank in 20 hours, and another pipe
empties it in 30 hours. If both pipes are opened together, how long will it take to fill the tank?Solution
The rate of the filling pipe is 1/20. The rate of the emptying pipe is 1/30. Net rate = (1/20 - 1/30) = 1/60. Time taken = 60 hours. Correct Option: d) 60 hours
With which Indian firm Israel's Phinergy has signed a joint venture deal to produce metal-air batteries?
Match the following:
Who has authored the book “Dreams from My Father”?
The research center of INDIA “HIMADRI” is located at?
Which is incorrect about T-Bills?
Which city is known as the ‘Pink City’ of India?
Revenue is recognized when the revenue is earned, not when the cash is received
Which G7 country was the first to end coal-fired power production, marking the closure of its last plant?
Azaz Patel is related to which of the following sport?
'Sohar' is traditionally recognized as which type of cultural expression in Bihar?
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