जॉइन Examsbookउत्तर : 3. "3 hrs"
A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ?5
प्र: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ?
- 12 hrs 50 minfalse
- 23 hrs 25 minfalse
- 33 hrstrue
- 42 hrs 5 minfalse
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उत्तर : 3. "3 hrs"
व्याख्या :
Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.