Question 1119398
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The language isn't clear; but I believe you are asking for the amount of increase in the fare....<br>
The ratio 5:7 means we can represent the old fare by 5x and the new fare by 7x; the amount of increase in the fare is 7x-5x = 2x.<br>
The new fare, 7x, is rs. 1421:<br>
{{{7x = 1421}}}
{{{x = 203}}}<br>
The amount of increase in the fare is 2x = 2 * rs. 203 = rs. 406.