Question:
The second class railway fare for 240 km of Journey is Rs 15.00. What would be the fare for a journey of 139.2 km?
Solution:
Let Rs x be the fare for a journey of 139.2 km.
Since the distance travelled and the fare are in direct variation, we have:
$\frac{240}{139.2}=\frac{15}{x}$
$\Rightarrow 240 \times x=15 \times 139.2$
$\Rightarrow x=\frac{15 \times 139.2}{240}$
$=\frac{2088}{240}$
$=8.7$
Thus, the fare for a journey of $139.2 \mathrm{~km}$ will be $\mathrm{Rs} 8.70$.
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