If 1 saree is offered free on purchase of 3 sarees, what is the effective discount on each saree?1). 20%2). 30%3). 25%4). 40%

If 1 saree is offered free on purchase of 3 sarees, what is the effect

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1.	If 1 saree is offered free on purchase of 3 sarees, what is the effective discount on each saree?1). 20%2). 30%3). 25%4). 40%
Answer» I am not SURE, MAY be 30% is CORRECT