An aeroplane covers a certain distance at a speed of 320 kmph in 4 hours. To cover the same distance in 1 2/3 hours, it must travel at a speed of:	Choose the correct choice from the following answers:  A) 520  B) 620  C) 820  D) 768  E) 720
Distance = (240 x 5) = 1280 km.   Speed = Distance/Time   Speed = 1280/(5/3) km/hr. [We can write 1 2/3 hours as 5/3 hours]   Required speed = (1280 x	3/5) km/hr = 768 km/hr   Answer 768) 768 Km/hr
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An aeroplane covers a certain distance at a speed of 320 kmph in 4 hours. To cover the same distance in 1 2/3 hours, it must travel at a speed of: