Discussion
The marked price of a watch is Rs. 800. A shopkeeper gives two successive discounts and sells the watch at Rs. 612. If the first discount is 10%, the second discount is
Answer: C
Work through the first discount, then compare what is left with the selling price.
\[ 800 \times (1 - 0.10) = \text{Rs. } 720 \]
\[ \frac{612}{720} = 0.85 \quad\Longrightarrow\quad \text{second discount} = 15\% \]
Checking: \( 720 \times 0.85 = 612 \).
The combined discount here is \( 1 - 0.90 \times 0.85 = 23.5\% \), which is \( \dfrac{800-612}{800} \) - but the question asks only for the second step.
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