A boy performs 3/5 of the total journey by train, 7/20 by bicycle and the remaining 6.5 km on foot. His total journey is :
Let the total journey be x km. Then
=> 3x/5 + 7x/20 + 6.5 = x
=> 12x + 7x + 20 * 6.5 = 20x
=> x = 130 km.
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