Question

An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. What speed it must attain to cover the same distance in $1\frac{2}{3}$ hours?

• A. 300 km/hr
  

• B. 360 km/hr

• C. 720 km/hr

• D. 180 km/hr

Answer 1

Answer: (C)

The correct option is C

720 km/hr

Distance = 240 $\times$ 5 = 1200 km

Speed = $\frac{Distance}{Time}$

Required speed = $\frac{1200}{\frac{5}{3}}$ km/hr = $\frac{3600}{5}$ km/hr = 720 km/hr