By selling 35 greeting cards, a shopkeeper loses an amount equal to the selling price of 5 greeting cards. Find his loss percent.
Let, S.P of 1 Greeting Card be Rs. x
S.P of 35 greeting Cards = Rs. (35×x)=Rs. 35x
Loss = S.P of 5 greeting cards = Rs. x×5=Rs. 5x
CP of 35 greeting cards = S.P + Loss =Rs. (35x+5x)=Rs. 40x
Hence, Loss is 12%.