Q: The distance covered by a train in (5x-1) hours is 125y³ – 1) km. The speed of the train is : एक रेलगाड़ी द्वारा (5y – 1) घंटों में तय की गई दूरी (125y³ – 1) किमी. हैं रेलगाड़ी की चाल ज्ञात कीजिए।
A.
(5y + 1) km/h
B.
(25y² + 5y + 1) km/h
C.
(2y² – 5y + 1) km/h
D.
(5y³ – 1) km/h
Correct Answer:
Option B -
Explanations:
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