28. A passenger, while boarding the plane, slipped from the stairs and got hurt. The pilot took thepassenger in the emergency clinic at the airport for treatment. Due to this, the plane gotdelayed by half an hour. To reach the destination 1500 km away in time, so that the passengerscould catch the connecting flight, the speed of the plane was increased bythe usual speed. Find the usual speed of the plane.250 km/hour than

28. A passenger, while boarding the plane, slipped from the stairs and

1.	28. A passenger, while boarding the plane, slipped from the stairs and got hurt. The pilot took thepassenger in the emergency clinic at the airport for treatment. Due to this, the plane gotdelayed by half an hour. To reach the destination 1500 km away in time, so that the passengerscould catch the connecting flight, the speed of the plane was increased bythe usual speed. Find the usual speed of the plane.250 km/hour than
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