जॉइन Examsbookउत्तर : 1. "20 hrs"
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in ?5
प्र: A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in ?
- 120 hrstrue
- 228 hrsfalse
- 336 hrsfalse
- 440 hrsfalse
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उत्तर : 1. "20 hrs"
व्याख्या :
Answer: A) 20 hrs Explanation: 1/8 - 1/x = 1/10 => x = 40 hrs