An aeroplane covers a certain distance of 590 Kmph in 8 hours. to cover the same distance in 2 3/4 hours, it Must travel at a speed of	Choose the correct option.
A) 1780  B) 1716  C) 1890  D) 1980  E) 1450

Rationale: speed of aeroplane = 590 kmph distance travelled in 8 hours = 590 * 8 = 4720 km speed of aeroplane to acver 4720 km in 11 / 4 = 4720 * 4 / 11 = 1716 km answer b .
Answer: B