Mathematics · Speed, Time and Distance
एक नाविक धारा के अनुकूल 18 किमी की दूरी 4 घंटे में तय करता है। यदि वह धारा के प्रतिकूल उतनी ही दूरी तय करके 12 घंटे में वापस आता है, तो धारा की गति (किमी/घंटा में) क्या है?
- 12
- 21.75
- 31.5✓
- 41.25
सही उत्तर देखें
1.5
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