The image below displays that the water leakage happens from the bottom of the trough at a constant rate. 2hrs later, the level of the water has fallen by 20cm. How many more mins will it take for the trough to empty completely?

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1 Answer
Dean R.
May 30, 2018

#1.4 # hours more

Explanation:

# V = 30 times ( ( 40 times (80+120)/2 ) + 120 times 20) = 122400 # cubic cm

Leakage rate # { 30 times 120 times 20 } / { 2 } = 36000 # cubic cm per hr

# 122400/ 36000 -2 = 1.4# hours more to leak out

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