সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
In a stream running at 2 km/hr, a motor boat goes 10 km upstream and back again to the starting point in 55 minutes. Find the speed of the motor boat in the still water.
In a stream running at 2 km/hr, a motor boat goes 10 km upstream and back again to the starting point in 55 minutes. Find the speed of the motor boat in the still water.
- ক. 6 km/hr
- খ. 5.5 m/hr
- গ. 6.45 km/hr
- ঘ. 7 km/hr
সঠিক উত্তরঃ 6.45 km/hr
এ সম্পর্কিত আরো প্রশ্ন দেখুন
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