Discussion

A vase has a marked price of Rs. 560. Simran pays Rs. 336 for it because she got 2 successive discounts, one of 20% and other of _____

Answer: C

Apply the known discount first, then see what fraction of the remainder she actually paid.

\[ 560 \times (1 - 0.20) = \text{Rs. } 448 \]

\[ \frac{336}{448} = 0.75 \quad\Longrightarrow\quad \text{second discount} = 1 - 0.75 = 25\% \]

Checking: \( 448 \times 0.75 = 336 \).

Taking \( \dfrac{560 - 336}{560} = 40\% \) gives the combined discount, not the second one - and indeed \( 1 - 0.80 \times 0.75 = 0.40 \).

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