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प्रश्न
A plane is flying at a speed of 500 km per hour. Express the distance ‘d’ travelled by the plane as function of time t in hour
उत्तर
Speed = `"distance covered"/"time taken"`
⇒ distance = Speed × time
⇒ d = 500 × t .......[∵ time = t hrs]
⇒ d = 500 t
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