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The downstream speed of a boat is 14 km/...

The downstream speed of a boat is 14 km/h. The upstream speed of this boat is 10 km/h. In what time it can cover a distance of 72 km in still water ? /
नाव की अनुप्रवाह (डाउनस्ट्रीम) गति 14 km/h है | नाव की उध्र्वप्रवाह (अपस्ट्रीम) गति 10km/h है वह नाव शांत जल में 72 km की दूरी कितने समय में तय कर सकती है ?

A

8 Hours / घंटे

B

6 Hours / घंटे

C

4 Hours / घंटे

D

12 Hours / घंटे

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