The flight fare between two cities is increased in the ratio 11:13. What is the increase (in Rs) in the fare, if the original fare was Rs 12100?
Let original fare = Rs. $$11x$$
=> New fare = Rs. $$13x$$
Also, original fare = $$12100 = 11x$$
=> $$x = \frac{12100}{11} = 1100$$
$$\therefore$$ Increase in fare = $$13x - 11x = 2x $$
= $$2 \times 1100 = Rs. 2200$$
=> Ans - (B)
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