Find the profit percent earned after selling an article at a doubled rate for half quantity.

Profit and Loss topics include: Profit and loss, including problems related to cost price, selling price, discounts, and marked prices.

Here are some formulas for percentage profit and loss:
Profit or Gain: Selling price -- Cost price
Loss: Cost price -- Selling price
Profit Percentage: (Profit/C.P.) ×100
Percentage Loss: (Loss/C.P.) ×100 

Here are some tricks for solving profit and loss problems:
Discount = MP -- SP
SP = MP - Discount
For false weight, profit percentage will be P% = ((True weight -- false weight)/ false weight) x 100