A. 2
B. 2.5
C. 3
D. 3.5
Explanation:
Part filled by A + B + C in 1 hour = 1/5 + 1/10 + 1/30 = 1/3
All the three pipes together will fill the tank in 3 hours.
Correct Answer: 3 ✔
Last Updated: February 08, 2020
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