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  • Directions for question : The graph below shows the varying rate of flow of water (litres/min) through a pipe used to fill a reservoir : <img alt="" src="h

Directions for question :

The graph below shows the varying rate of flow of water (litres/min) through a pipe used to fill a reservoir :

Whenever the rate of flow of water changed it did so at a uniform rate, as is apparent from the graph. The reservoir was completely filled up from being empty in the above eight hours.

Question :

Quantity A : Additional volume of water that could have been filled had the filling continued at 10 litres per minute from the time of three hours to six hours after start of filling

Quantity B : 1200 litres

Option: 1

Quantity A > Quantity B

 


Option: 2

Quantity A = Quantity B


Option: 3

Quantity A < Quantity B

 


Option: 4

The relation cannot be established from the given information


Answers (1)

best_answer

The volume as in Quantity A is shown by the region PQRS in the graph above

Hence required volume = Area of the trapezoid PQRS = (1/2)*10*(180+60) = 1200 liters

Hence option B is the right one

Posted by

himanshu.meshram

View full answer

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