A car finishes a journey in ten hours at the speed of 80 km/hr. If the same distance is to be covered in eight hours how much more speed does the car have to gain?	Options
A) 8 km/hr	B) 10 km/hr	C) 12 km/hr	D) 16 km/hr	E) None of these
Distance covered by the car = 80 × 10 = 800 km   \ Speed = 800⁄8 = 100 km/hr   \ Speed gain = 100 – 80 = 20 km/hr   Answer None of these
<result>E</result>
A car finishes a journey in ten hours at the speed of 80 km/hr. If the same distance is to be covered in eight hours how much more speed does the car have to gain?