answer it with short trick que is in given image
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Short: 1/5 + 1/4 - 1/8 = 1/required time
40/13 hr = required time
Step-by-step explanation:
Let total amount be 'a'.
Thus, A fills, 5hr = a
B fills, 4hr = a
C throws, 8hr = a
In 1 hr,
A fills, = a/5
B fills, = a/4
C throws = a/8
So, it means, in 1 hr
Water loaded = a/5 + a/5 - a/8
Water loaded(in 1hr) = 13a/40
Water loaded(in 40/13 hr) = a
So to fill the full tank of quantity a, 40/13 hr are required.
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