Marked price of an item is Rs 200. On purchase of 1 item discount is 22%, on purchase of 4 items discount is 33%. Rabia buys 5 items, what is the effective discount?

Marked price of item = Rs. 200

Amount saved on buying 1 item = $$\frac{22}{100} \times 200 = Rs. 44$$

Marked price of 4 items = $$4 \times 200$$ = Rs. 800

Amount saved on buying 4 items = $$\frac{33}{100} \times 800 = Rs. 264$$

Thus, on buying 5 items, total amount saved = 44 + 264 = Rs. 308

Total marked price of 5 items = $$5 \times 200$$ = Rs. 1000

$$\therefore$$ Effective discount = $$\frac{308}{1000} \times 100$$

= $$\frac{308}{10} = 30.8 \%$$

=> Ans - (B)