A bike covers a certain distance at the speed of 77km/h in 7 hrs. If the bike was to cover the same distance in approximately 11 hrs, at what approximate speed should the bike travel? Select:
A) 53 km/h  B) 52 km/h  C) 51 km/h  D) 50 km/h  E) 49 km/h
Ans.(E)   Sol. Total distance = 77 × 7 = 539 km   Now speed = 539/11= 
<gadget id="calculator">539/11</gadget>
<output>49</output>
49km/h
<result>E</result>
A bike covers a certain distance at the speed of 77km/h in 7 hrs. If the bike was to cover the same distance in approximately 11 hrs, at what approximate speed should the bike travel?