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A monthly bus ticket costs 20 percent more than a single ticket. A week's extension can be had for the former by paying 10% of the monthly ticket's cost. If the money paid for the monthly ticket (with extension) is Rs 660, then the price of the single ticket is :

Solution

Correct Option: 2

Let monthly ticket = M. With 10% extension: 1.10M=6601.10M = 660, so M=600M = 600.

Monthly = 20% more than single: M=1.20×SM = 1.20 \times S.

600=1.20×S600 = 1.20 \times S, so S=500S = 500.

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