A man rows at 6 km/hr in still water and 4.5km/hr against current. His rate along the current is :

A man rows at 6 km/hr in still water and 4.5km/hr against current. His rate along the current is : Correct Answer 7.5 km/hr

along the current হচ্ছে current এর সাথে, তাহলে current তাকে row করতে সাহায্যে করবে। এটি হবে নিজের rate + current এর rate এখন current এর rate = 6 - 4.5 = 1.5 km/hr along rate = 6 + 1.5 = 7.5 km/hr
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