Marked price of an item is Rs 100. On purchase of 2 items discount is 25%, on purchase of 4 items discount is 43%. Rajasi buys 6 items, what is the effective discount?

Marked price of item = Rs. 100

=> Marked price of 2 items = $$2 \times 100$$ = Rs. 200

Amount saved on buying 2 items = $$\frac{25}{100} \times 200 = Rs. 50$$

Marked price of 4 items = $$4 \times 100$$ = Rs. 400

Amount saved on buying 4 items = $$\frac{43}{100} \times 400 = Rs. 172$$

Thus, on buying 6 items, total amount saved = 50 + 172 = Rs. 222

Total marked price of 6 items = $$6 \times 100$$ = Rs. 600

$$\therefore$$ Effective discount = $$\frac{222}{600} \times 100$$

= $$\frac{222}{6} = 37 \%$$

=> Ans - (A)