Question

a racing car travels 425m in 10 sec express this speed in km per hour​

Answer 1

425/10*18/5=153 is d crrect answear

Answer 2

425 m/ 10s = 42.5m / s

= 42.5m/s × 3600s/hr × 1Km/1000m

= 153 Km / hr

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