The average speed of a car is 1 4/5 times the avg speed of a bike. A tractor covers 575km in 25hrs. How much distance will the car cover in 4hrs if the speed of the bike is twice speed of the tractor?  Options:
A) 400 km
B) 500 km
C) 331.2 km
D) 550 km
E) 600 km
Sol. Average speed of a tractor = 23 km / h   The speed of a bus in an hour = 23 × 2 = 46 km   The speed of a car in an hour = 9/5 * 46= 
<gadget id="calculator">9/5 * 46</gadget>
<output>414/5 = around 82.8</output>
82.8 km   So, the distance covered by car in 4 h is   82.8 × 4= 331.2 km   Ans.(331.2 km)
<result>C</result>
The average speed of a car is 1 4/5 times the avg speed of a bike. A tractor covers 575km in 25hrs. How much distance will the car cover in 4hrs if the speed of the bike is twice speed of the tractor?