An airplane travels the first 20 mins at 300 km/h and the next 20 mins at a speed of 200 km/h. Find its average speed.
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Geometry Assignment Class : Chapter 1 : Similarity (PS 1.3, 1.4) EXAMPLES FOR PRACTICE - 1.3 А. A B 1. In the figure, A ABO - ADCO. If AB = 6, CD = 3, AO = 4, Find DO.
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