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The speed of a train is 3 times that of ...

The speed of a train is 3 times that of a car and 1.5 times that of a steamer. A person travelled x km by steamer, 3.75x km by train and `x/2` km by car. If the speed of the car is 40 km/h and total time taken by him is `4 1/2` hours, then the total distance travelled by him in three modes is:
किसी ट्रेन की चाल एक कार की चाल से तिगुनी तथा एक स्टीमर की चाल से 1.5 गुनी है | एक व्यक्ति ने स्टीमर से x किमी, ट्रेन से 3.75x किमी तथा कार से `x/2` किमी की यात्रा की | यदि कार की चाल 40 किमी/घंटा है और उसके द्वारा लिया गया कुल समय `4 1/2` घंटा है, तो इन तीन साधनों की सहायता से उसके द्वारा तय की गयी कुल दूरी ज्ञात करें |

A

a)450 km

B

b)520 km

C

c)480 km

D

d)420 km

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