 
                 
                InterviewSolution
 Saved Bookmarks
    				| 1. | Two taps A and B can fill an overhead tank in 10 hours and 15 hours respectively. Both the taps are opened for 4 hours and then B is turned off. How much time will A take to fill the remaining tank? | 
| Answer» The given details are, Tap A can fill the tank in = 10 hours Tap A can fill the tank in 1 hour = 1/10 Tap B can fill the tank in = 15 hours Tap B can fill the tank in 1 hour = 1/15 Both taps together can fill the tank in 1 hour = 1/10 + 1/15 = (3+2)/30 = 5/30 = 1/6 Both taps together can fill the tank in 4 hours = 4 × 1/6 = 2/3 Remaining tank to be filled = 1 – 2/3 = (3-2)/3 = 1/3 ∴ Time taken by A to fill the remaining tank = (1/3)/(1/10) = 10/3 = 3 1/3 hours | |