An aeroplane covers a certain distance at a speed of 150 kmph in 2 hours. To cover the same distance in 1 2/3 hours, it must travel at a speed of:	Choose the correct choice.
A) 1300 kmph  B) 160 kmph  C) 180 kmph  D) 1080 kmph  E) none
Explanation: Distance = (150 x 2) = 300 km.   Speed = Distance/Time   Speed = 300/(5/3) km/hr. [We can write 1 2/3 hours as 5/3 hours]   Required speed = 300 x 3/5 km/hr = 180 km/hr.   Answer: Option 180 kmph
<result>C</result>
An aeroplane covers a certain distance at a speed of 150 kmph in 2 hours. To cover the same distance in 1 2/3 hours, it must travel at a speed of: