The speed of a boat in still water is 6 ...

The speed of a boat in still water is 6 km/h. If it takes four times more time to go against the current than to go in the direction of the current, what will be the speed of the current ? /
शांत जल में एक नाव की गति 6 km /h है | यदि इसे धारा की दिशा में जाने की तुलना में धारा के विपरीत जाने में चार गुना अधिक समय लगता है तो धारा की गति क्या होगी ?

2.5 km/h

5 km/h

4.2 km/h

3.6 km/h

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