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  1. A man perform 2/15 of the total journey by rail, 9/20 by tonga and the remaining 10 km on foot. This total journey is ?
    1. 15.6 km.
    2. 12.8 km.
    3. 16.4 km.
    4. 24 km.
Correct Option: D

Let the total journey be x km. then,
2x/15 + 9x/20 + 10 = x
⇒ 8x + 27x + 600 = 60x
⇒ x = 24
∴ Total journey = 24 km.


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