A train travels 325 km in 3.5 hours and 470 km in 4 hours. Find the average speed of train ?	Options:
A) 116 kmph
B) 106 kmph
C) 186 kmph
D) 126 kmph
E) 176 kmph

Rationale: explanation : as we know that speed = distance / time for average speed = total distance / total time taken thus , total distance = 325 + 470 = 795 km thus , total speed = 7.5 hrs average speed = 795 / 7.5 = > 106 kmph . answer : b
Answer: B