A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 4 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold? A. 360 lit B. 480 lit C. 320 lit D. 420 lit Answer Workspace Report Discuss Answer with explanation Answer: Option B Explanation 1/k – 1/20 = -1/24 k = 120 120 x 4 = 480 Therefore, the capacity of the cistern is 480 liters Workspace
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