Question

if the cost price of 15pens is equal to the selling price of 20 pens find the loss percent

Answer 1

let, cost of 1 pen = x

cost of 15pens =15x

selling price = cost of 20pens =20x

loss percentage = ((cost price-selling price)/cost price)*100

= ((15x-20x)/15x=(-1/3)*100

=33.33%

thus loss is 33.33 percent