সব প্রশ্নে ফিরে যান
Math
Three taps A, B and C can fill a tank in 12,25 and 20 hours respectively. If a is open all the time and B and C are open for one hour each alternately, the tank will be full in :
A) 7 hrs
সঠিক উত্তর
B) 6.5 hrs
C) 7.5 hrs
D) 5.0 hrs