An athlete covers a certain distance in 30 min at the uniform speed of 12km/hr.By how much he must increase his speed so as to cover the same distance five minutes early
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Answered by
1
The speed is 12 km/hr and time is 30 minutes or 0.5 hours. So, Distance = 12 *0.5 = 6 km. To cover the distance 5 minutes early, he should cover this distance in 25 minutes or 5/12 hours.
Answered by
5
Step-by-step explanation:
▪️First, let us find the distance.
▪️Distance = Speed × Time.
▪️The speed is 12 km/hr and time is 30 minutes or 0.5 hours.
▪️So, Distance = 12 *0.5 = 6 km.
▪️To cover the distance 5 minutes early, he should cover this distance in 25 minutes or 5/12 hours.
▪️Now, Speed = Distance ÷ Time.
▪️So, Speed = 6 km ÷ (5/12) hours = 14.4 km/h.
▪️Current speed is 12 km/h, and required speed is 14.4 km/h.
▪️Therefore, he should increase his speed by 14.4–12 = 2.4 km/h.
Hopes it help you❤️❤️
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