Marked price of an item is Rs 800. On purchase of 1 item discount is 15%, on purchase of 4 items discount is 38%. Rajshri buys 5 items, what is the effective discount?

Marked price of item = Rs. 800

Amount saved on buying 1 item = $$\frac{15}{100} \times 800 = Rs. 120$$

Marked price of 4 items = $$4 \times 800$$ = Rs. 3200

Amount saved on buying 4 items = $$\frac{38}{100} \times 3200 = Rs. 1216$$

Thus, on buying 5 items, total amount saved = 120 + 1216 = Rs. 1336

Total marked price of 5 items = $$5 \times 800$$ = Rs. 4000

$$\therefore$$ Effective discount = $$\frac{1336}{4000} \times 100$$

= $$\frac{334}{10} = 33.4 \%$$

=> Ans - (A)