A man performs 3/5 of the total journey by rail, 17/20 by bus and the remaining 6.5 km on foot. His total journey is : Choose the correct choice from the following choices:
A) 125 km  B) 130 km  C) 135 km  D) 140 km  E) None
Sol.   Let the total journey be x km. Then   3x/5 + 7x/20 + 6.5 = x   ⇔ 12x + 7x + 20 * 6.5 = 20x   ⇔ x = 130 km.   Answer 130 km
<result>B</result>
A man performs 3/5 of the total journey by rail, 17/20 by bus and the remaining 6.5 km on foot. His total journey is :