Question

find the loss or gain as percent if the cp of 10 articles all of the same kind is equal to sp of8artickes

Answer 1

let cp of 10 article is 10 therefore cp of 1 article is 1
now sp of 8 article is also 10
and sp of 1 article is 10/8
therefore gain = sp- cp
=10/8-1
=2/8
=1/4
and gain percent=(1/4)/1×100
=25%