The second class railway fare for $240 k m$ of journey is $R s 15.00$ . What would be the fare for a journey of $139.2 k m$ ? Assume that the fire varies directly as the length of the journey.

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Solution

Fare for $240$ km journey = $R s . 15$
$∴$ Fare for $1 k m = R s . \frac{15}{240}$
$∴$ Fare for $139.2 k m = \frac{15}{240} \times 139.2$
$= R s . 8.7$

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