225. Three taps A, B and C can fill a tank in 12, 15 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 is_______? September 23, 2025 by Admin A. 6 hrs B. 6 2/3 hrs C. 7 hrs D. 7 1/2 hrs ✅ The correct answer is option C. 7 hrs.
