7 grade maths> If the cost price of 15 pens is equal to ...

If the cost price of 15 pens is equal to the selling price of 20 pens , find the loss per cent

Ishika kumari , 8 Years ago

Grade 7

2 Answers

sonika p

Last Activity: 8 Years ago

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

Nitesh

Last Activity: 8 Years ago

Given cost price of 15 pen= selling price of 20 penLet cost price of 15 pen =X So cost price of one pen= X/15Selling price of 20 pens = X So selling price of 1 pen = X/20Loss on per pen=cost price- sell price=》X/15 -X/20=X/60 Now loss percent=loss×100/cost priceLoss percent=X/60 ×100 × 15/X=》 LOSS PERCENT=25. hence the answer is 25°/•