A bike covers a certain distance at the speed of 56km/h in 5 hrs. If the bike was to cover the same distance in approximately 7 hrs, at what approximate speed should the bike travel? Select:
A) 39 km/h
B) 35 km/h
C) 55 km/h
D) 40 km/h
E) 50 km/h
Ans.(D)   Sol. Total distance = 56 × 5 = 280 km   Now speed = 280/7= 
<gadget id="calculator">280/7</gadget>
<output>40</output>
40 km/h
<result>D</result>
A bike covers a certain distance at the speed of 56km/h in 5 hrs. If the bike was to cover the same distance in approximately 7 hrs, at what approximate speed should the bike travel?