Question

the SP of 10 articles is the same as the CP of 11 articles find the gain or loss percent

Answer 1

CP of one article = x

CP of 11 article = 11x = SP of 10 article

SP of one article = 11x/10 = 1.1x

Gain = 1.1x - 1 = 0.1x

Percent = 0.1x/x   x  100 = 10%