Find the values and state the correct relationship. मान ज्ञात कीजिये तथा सही सम्बन्ध स्थापित कीजिये। The speed of boat in still water is 4 kmph more than the speed of stream. The sum of distance covered by boat in 2 hours upstream and 2 hours downstream is 28 km. Quantity I: Distance travelled by boat downstream in 5 hours. Quantity II: Average speed of Siddharth while driving a car from home to office and back when travelling at a speed of 50 kmph from home to office and at a speed of 40 kmph from office to home. शांत जल में नाव की गति धारा की गति से 4 किमी/घंटे अधिक है। 2 घंटे ऊर्ध्वंप्रवाह और 2 घंटे अनुप्रवाह में नाव द्वारा चली गयी दूरी 28 किमी है। मात्रा I: नाव द्वारा 5 घंटे में अनुप्रवाह में चली गयी दूरी । मात्रा II: घर से कार्यालय तक 50 किमी प्रति घंटे की चाल से यात्रा करते समय और कार्यालय से घर तक 40 किमी प्रति घंटे की रफ्तार से यात्रा करते समय सिद्धार्थ की औसत गति ।
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