In a 300 m race, Abhishek runs at 24 km per hour. If Abhishek gives Kashyap a start of 12 m and still beats him by 45 seconds. What is the speed of Kashyap?

9.6 km/hr

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9.84 km/hr

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10.24 km/hr

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11.52 km/hr

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10.8 km/hr

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Solution

The correct option is D
11.52 km/hr

Time taken by Abhishek to cover 300 m = $(\frac{60 \times 60}{24000} \times 300) s e c = 45 s e c$

$∴$ Kashyap covers (300 - 12) m = 288 m in (45 + 45) sec = 90 sec

$∴$ Kashyap's speed = $(\frac{288 \times 60 \times 60}{90 \times 1000}) k m / h r = 11.52 k m / h r$

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In a 300 m race, Abhishek runs at 24 km per hour. If Abhishek gives Kashyap a start of 12 m and still beats him by 45 seconds. What is the speed of Kashyap?

The correct option is D 11.52 km/hr Time taken by Abhishek to cover 300 m = (60×6024000×300)sec=45sec ∴ Kashyap covers (300 - 12) m = 288 m in (45 + 45) sec = 90 sec ∴ Kashyap's speed = (288×60×6090×1000)km/hr=11.52km/hr