Solution
Let list price = Rs. $$100x$$
After first discount of 15%, price = $$100x \times \frac{85}{100}=85x$$
After second discount of 20%, price = $$85x \times \frac{80}{100}=68x$$
After third discount of 25%, price = $$68x \times \frac{75}{100}=51x$$
=> Equivalent discount = $$\frac{100x-51x}{100x} \times 100$$
= $$49\%$$
=> Ans - (B)
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