The boat travels at a speed of 100km/hr when going from initial point to destination. While the speed of the boat was 130km/hr when coming back from destination to initial point. What was the average speed in the whole journey?
ابتدائی مقام سے منزل تک جاتے وقت کشتی 100 کلومیٹر فی گھنٹہ کی رفتار سے سفر کرتی ہے۔ جب کہ منزل سے ابتدائی مقام پر واپس آتے وقت کشتی کی رفتار 130 کلومیٹر فی گھنٹہ تھی۔ پورے سفر میں اوسط رفتار کتنی تھی؟
Answer: 115km/hr
Explanation
Total time taken: T=2t
Average speed = d/t = 230t = 115 km/hr
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