Marked price of an item is Rs 900. On purchase of 2 items discount is 16%, on purchase of 5 items discount is 44%. Raksha buys 7 items, what is the effective discount?

Marked price of item = Rs. 900

=> Marked price of 2 items = $$2 \times 900$$ = Rs. 1800

Amount saved on buying 2 items = $$\frac{16}{100} \times 1800 = Rs. 288$$

Marked price of 5 items = $$5 \times 900$$ = Rs. 4500

Amount saved on buying 5 items = $$\frac{44}{100} \times 4500 = Rs. 1980$$

Thus, on buying 7 items, total amount saved = 288 + 1980 = Rs. 2268

Total marked price of 7 items = $$7 \times 900$$ = Rs. 6300

$$\therefore$$ Effective discount = $$\frac{2268}{6300} \times 100$$

= $$\frac{2268}{63} = 36 \%$$

=> Ans - (C)