जॉइन Examsbookउत्तर : 4. "40 hrs"
A water tank in a village is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the tank is full, in how many hrs will the leak empty it ?5
प्र: A water tank in a village is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the tank is full, in how many hrs will the leak empty it ?
- 134 hrsfalse
- 236 hrsfalse
- 338 hrsfalse
- 440 hrstrue
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उत्तर : 4. "40 hrs"
व्याख्या :
Answer: D) 40 hrs Explanation: The time taken by the leak to empty the tank = 18 - 110 = 5 - 440 = 140 Therefore, the leak empties the tank in 40 hours.