Supriya runs a marathon race in 50 minutes at an average speed of 48 km/hour. In order to set a national record, she needs to win the race in 40 minutes. Considering that her speed remains constant, at what minimum speed should she run to set the record
- 70 km / hr
- 60 km / hr
- 55 km / hr
- 50 km / hr
Answer:
- 60 km / hr
Supriya runs a marathon
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