Question

Some toffees are bought of 11for rs 10 and same no at the rate of 9 for rs 10 if the whole lot is sold at one rs per toffees find the gain or loss percent in whole transaction

Answer 1

let the cp of 1 toffee = 1 rs
cp of 11 toffees =10rs
sp of 9 toffees =10rs
sp of 1 toffee= 10/9rs
sp>cp
hence gain = 10/9-1
=1/9
gain%=gain ×100/cp=100/9% ans
maybe