1.

A shopkeeper bought 12 toffees for one rupee. in order to gain 20% how much toffees should he sells for a rupee

Answer»

C.P. . of 12 TOFFEES = Rs. 1
S.P. = ( \frac{100 +Profit \%}{100}) \times C.P. \\ = (\frac{100 + 20}{100} ) \times 1 \\ = \frac{120}{100} \\ = \frac{6}{5}

For Rs 6/5 , toffees sold =12
For Rs. 1 , toffees sold = 12×5/6=Rs.10


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