সব প্রশ্নে ফিরে যান
Math
A tank is filled in 5 hours by three pipes A,B and C The pipe C is twice as fast as B and B is twice as fast as A How much time will pipe A alone take to fill the tank?
A) 20 hours
B) 25 hours
C) 35 hours
সঠিক উত্তর
D) None of these