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A water tank of capacity 6000 litres is connected to 2 taps ’A’ and 'B'. Water flows from these 2 taps at 90 litres per minute and 60 litres per minute respectively.
To fill this empty tank, first tap ‘A’ is opened for sometime and once it is closed, tap ‘B’ is opened till the tank is full taking a total of 90 minutes.
What is the difference in the time (in minute) for which the taps are opened to fill the tank.
  • a)
    20
  • b)
    30
  • c)
    70
  • d)
    50
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A water tank of capacity 6000 litres is connected to 2 taps ’A’ and '...
Let the tap B is open for time = t1 minute.
duration of tab A is opened for '90-t1' minute.
Since the rate of inflow of water of tab A is 90 liter/minute, while the rate of inflow of water of tab B is 60 liter/minute.
So as per the given data they both fill the tank as follow
90×(90-t1) + 60 x(t1) =6000
8100-6000 = 30 t1
t1 = 2100/30 = 70 Minute
Hence Tab B is opened for 70 Minute.
It is already given that the total time of open for both tab is 90 Minute hence the duration for which Tab A is open = 90-70 = 20 Minute
Difference in time = 70-20 = 50 Minute.
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A water tank of capacity 6000 litres is connected to 2 taps ’A’ and 'B'. Water flows from these 2 taps at 90 litres per minute and 60 litres per minute respectively.To fill this empty tank, first tap ‘A’ is opened for sometime and once it is closed, tap ‘B’ is opened till the tank is full taking a total of 90 minutes.What is the difference in the time (in minute) for which the taps are opened to fill the tank.a)20b)30c)70d)50Correct answer is option 'D'. Can you explain this answer?
Question Description
A water tank of capacity 6000 litres is connected to 2 taps ’A’ and 'B'. Water flows from these 2 taps at 90 litres per minute and 60 litres per minute respectively.To fill this empty tank, first tap ‘A’ is opened for sometime and once it is closed, tap ‘B’ is opened till the tank is full taking a total of 90 minutes.What is the difference in the time (in minute) for which the taps are opened to fill the tank.a)20b)30c)70d)50Correct answer is option 'D'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about A water tank of capacity 6000 litres is connected to 2 taps ’A’ and 'B'. Water flows from these 2 taps at 90 litres per minute and 60 litres per minute respectively.To fill this empty tank, first tap ‘A’ is opened for sometime and once it is closed, tap ‘B’ is opened till the tank is full taking a total of 90 minutes.What is the difference in the time (in minute) for which the taps are opened to fill the tank.a)20b)30c)70d)50Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A water tank of capacity 6000 litres is connected to 2 taps ’A’ and 'B'. Water flows from these 2 taps at 90 litres per minute and 60 litres per minute respectively.To fill this empty tank, first tap ‘A’ is opened for sometime and once it is closed, tap ‘B’ is opened till the tank is full taking a total of 90 minutes.What is the difference in the time (in minute) for which the taps are opened to fill the tank.a)20b)30c)70d)50Correct answer is option 'D'. Can you explain this answer?.
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