If 2 pair of trouser is offered free on purchase of 3 pair of trousers priced Rs 900 each what is the effective discount on each pair of trouser?
Cost price of 1 trouser = Rs. 900
Cost price of 5 trousers = $$5 \times 900 = Rs. 4,500$$
If 2 trousers are offered free on purchase of 3 trousers, => Cost of 3 trousers = $$3 \times 900 = Rs. 2,700$$
=> Effective discount = $$\frac{4500 - 2700}{4500} \times 100$$
= $$\frac{1800}{45} = \frac{200}{5} = 40\%$$
=> Ans - (A)
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