जॉइन Examsbookउत्तर : 2. "2/3 hrs"
A train moving at 2/3 rd of its normal speed reaches its destination 20 minutes late. Find the normal time taken ?5
प्र: A train moving at 2/3 rd of its normal speed reaches its destination 20 minutes late. Find the normal time taken ?
- 14/3 hrsfalse
- 22/3 hrstrue
- 33/2 hrsfalse
- 41/4 hrsfalse
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उत्तर : 2. "2/3 hrs"
व्याख्या :
Answer: B) 2/3 hrs Explanation: Let the original speed and time is S and Tthen distance = S x TNow the speed changes to 2/3S and T is T+20As the distance is sameS x T = 2/3Sx(T+20)solving this we get t = 40 minutes =40/60 = 2/3 hour