Online CAHSEE Prep
 

Practice CAHSEE Prep Math Question.

QUESTION:

Elapsed Time:

 sec

A 420 liter cistern is pre-filled with 60 liters of water. How long will it take to completely fill the cistern given that it will be fed at a rate of 9 liters per minute?


Show Hint

(A) 30 minutes
(B) 40 minutes
(C) 60 minutes
(D) 70 minutes

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