During sale, Raghav bought a notebook marked for ₹12 at 25% discount and a pen marked for ₹75 at 20% discount. How much (in ₹) did he save due to sale?

Correct option is C

Given:
Notebook marked price = ₹12
Discount on notebook = 25%
Pen marked price = ₹75
Discount on pen = 20%
Solution:
$$\text{Discount} = 25\% \text{ of } ₹12 = 0.25 \times 12 = ₹3$$​​
$$\text{Discount} = 20\% \text{ of } ₹75 = 0.20 \times 75 = ₹15$$​​
Total Savings = ₹3 + ₹15 = ₹18

Thus , option (C) is right.