A man performs 3/5 of the total journey by rail, 17/20 by bus and the remaining 6.5km on foot. His total journey is  Choose one
A) 65 km  B) 100 km  C) 120 km  D) 130 km  E) 140 km

Rationale: explanation : let the journey be x km then , 3 x / 5 + 7 x / 20 + 6.5 = x 12 x + 7 x + 130 = 20 x x = 130 km answer : option d
Answer: D