DSSSB · Mathematics
A bus covers half the distance at 60 km/hr and the remaining half at 90 km/hr. Find the average speed of the entire journey.
- 70 km/hr
- 72 km/hr
- 74 km/hr
- 76 km/hr
एक बस आधी दूरी 60 km/hr और शेष आधी दूरी 90 km/hr की चाल से तय करती है। पूरी यात्रा की औसत चाल ज्ञात कीजिए।
- 70 km/hr
- 72 km/hr
- 74 km/hr
- 76 km/hr
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