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An aeroplane takes 1 hour less for a ...

An aeroplane takes 1 hour less for a journey of 1200 km if its speed is increased by 100 km/hr from its usual speed. Find its usual speed.

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To solve the problem step by step, we will denote the usual speed of the airplane as \( x \) km/hr. ### Step 1: Define the variables Let the usual speed of the airplane be \( x \) km/hr. ### Step 2: Write the distance The distance of the journey is given as 1200 km. ...
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