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A man on a tour travels first 360 km by ...

A man on a tour travels first 360 km by train at 72 km/h, the next 160 km on a motor cycle at 12.80 km/h and the last 200 km by on a bicycle at 16 km/h. Ignoring the buffer times between the different modes of travel, what is the average speed (in m/s) for his tour?
किसी यात्रा में एक व्यक्ति पहली 360 किमी की दूरी 72 किमी/घंटा की चाल से ट्रेन से तय करता है, अगली 160 किमी की टूरी मोटरसाइकिल पर 12.80 किमी/घंटा की चाल से तथा अंतिम 200 किमी की दूरी एक साइकिल पर 16 किमी/घंटा की चाल से तय करता है| परिवहन के विभिन्न साधनों के बीच मध्यवर्ती समय को नज़रअंदाज़ करते हुए, इस यात्रा में उसकी औसत चाल ( मी/सेकंड में ) ज्ञात करें |

A

a)6.67

B

b)7.33

C

c)4.33

D

d)5.67

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PINNACLE-SPEED AND DISTANCE-EXERCISE
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  13. The speed of A for walking two times is equal to the speed of B for wa...

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  14. Two trains running in the opposite directions cross each other in 12 s...

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  15. A train with the average speed of 54 km/h, covers a distance in 200 mi...

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  17. A 180 m long train running at 20 m/s will take what time ( in seconds ...

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  18. A person travels 75 km at a speed of 25 km/h, next 60 km at a speed of...

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