A person travels a distance of 30 km at a speed of 60 km /hr and then comes back at twice the speed. How may minutes did he take in total?

A person travels a distance of 30 km at a speed of 60 km /hr and then comes back at twice the speed. How may minutes did he take in total? Correct Answer 45

প্রথমে 30 km যায় 60 km/hr সুতরাং সময় নেয় 3060 = 12 hr = 30 min. দ্বিতীয়বার 30 km যায় 60 × 2 বা 120 km/hr সুতরাং সময় নেয় = 30120 = 14 হ্র = 15 min total min = 30 + 15 = 45 min.
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