Question

The selling price of 12 pens is equal to cost price of 10 pens.What is the profit per cent?

Answer 1

let selling price of 12 pens = cost price of 10 pens
therefore,
selling price = Rs. 10
cost price = Rs. 12
therefore, it's a loss
loss = cost price - selling price
loss = Rs. 12 - Rs. 10
loss = Rs. 2
loss percent = loss/cost price * 100
loss percent = 2/12 *100
lost percent = 50/3 %
loss percent = 16.66%

hope it is helpful...