সব প্রশ্নে ফিরে যান
Math
A reservoir has two pipes, A and B. A can fill the reservoir 5 hours faster than B. If both together fill the reservoir in 6 hours, the reservoir will be filled by A alone in-
A) 8 hours
B) 10 hours
সঠিক উত্তর
C) 11 hours
D) 12 hours