Marked price of an item is Rs 200. On purchase of 1 item discount is 5%, on purchase of 2 items discount is 14%. Rajeshri buys 3 items, what is the effective discount?

Marked price of item = Rs. 200

Amount saved on buying 1 item = $$\frac{5}{100} \times 200 = Rs. 10$$

Marked price of 2 items = $$2 \times 200$$ = Rs. 400

Amount saved on buying 2 items = $$\frac{14}{100} \times 400 = Rs. 56$$

Thus, on buying 3 items, total amount saved = 10 + 56 = Rs. 66

Total marked price of 3 items = $$3 \times 200$$ = Rs. 600

$$\therefore$$ Effective discount = $$\frac{66}{600} \times 100$$

= $$\frac{66}{6} = 11 \%$$

=> Ans - (C)