There are 3 taps, A, B and C, in a tank. These can fill the tank in 10 h, 20 h and 25 h, respectively. At first, all three taps are opened simultaneously. After 2 h, tap C is closed and tap A and B keep running. After 4 h, tap B is also closed. The remaining tank is filled by tap A alone. Find the percentage of work done by tap A itself.
A. 75%
B. 52%
C. 72%
D. 32%
Answer: Option C
This Question Belongs to Arithmetic Ability >> Pipes And Cistern
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