जॉइन Examsbookउत्तर : 1. "5 kmph"
A man rows his boat 60 km downstream and 30 km upstream taking 3 hrs each time. Find the speed of the stream ?5
प्र: A man rows his boat 60 km downstream and 30 km upstream taking 3 hrs each time. Find the speed of the stream ?
- 15 kmphtrue
- 210 kmphfalse
- 315 kmphfalse
- 445 kmphfalse
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उत्तर : 1. "5 kmph"
व्याख्या :
Answer: A) 5 kmph Explanation: Speed of the boat downstream s=a/t= 60/3 = 20 kmph Speed of the boat upstream s= d/t = 30/3= 10 kmph Therefore, The speed of the stream = speed of downstream - speed of upstream2=5 kmph