Question

if CPof 10chairs is equal to SPof 12chairs. find the gain or loss

Answer 1

Let CP of one chair be x and SP of one chair be y

we are given 10x =12y
                 so, x/y = 12/10
                      x/y = 6/5

so, Let CP be 6a and SP be 5a

So, loss = 6a-5a = a so, loss % = a*100/6a = 100a/6a = 16.6 %