a vendor bought toffees at 6 for a rupee . how many for a rupee must he sell to gain 25 % ?
"c . p . of 6 toffees = re . 1 s . p . of 6 toffees = 150 % of re . 1 = rs . 3 / 2 for rs . 3 / 2 , toffees sold = 6 . for re . 1 , toffees sold = 6 x 3 / 2 = 9 . answer b"
multiply(6, add(const_1, divide(25, const_100)))