A cistern has a leak which would empty the cistern in 20 minutes.
Question 1:
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 both emptied in 24 minutes. How many liters does the cistern hold?
A.480 liters
Feedback1/x - 1/20 = -1/24 x = 120 120 * 4 = 480
B.600 liters
C.720 liters
D.800 liters
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