Question

Formula for finding the selling price and cost price.

Sales tax is given, its either a whole number or a percentage.​

Answer 1

• Selling price is the price the price that the consumer pays in order to buy an item
• Cost price is the original price of the item.
• Selling price = Cost price + Profit
• Selling price = Cost price - Loss
• Cost price = Selling price - Profit
• Cost price = Selling price + Loss
• Selling price =

`(100 + gain\%)/(100) * cost \: \: price`

• Selling price =

`(100 - loss\%)/(100) * cost \: \: price`

• Cost price =

`(100)/(100 + gain\%) * selling \: \: price`

• Cost price =

`(100)/(100 - loss\%) * selling \: \: price`

Hope you could get an idea from here.

Doubt clarification - use comment section

Answer 2

All formulae about profit and loss:-

A) Gain = SP – CP

B) Loss = CP –SP

C) Loss or gain is always calculated over CP.

D) %Gain = {(Gain*100)/CP}

E) %Loss = {(Loss*100)/CP}

F) SP = {(100 %Gain)/100}*CP

G) SP = {(100-%Loss)/100}*CP

H) CP = {100/(100 %Gain)}*SP

I) CP ={100/(100-%Loss)}*SP

J) If an article is sold at a gain of say, 20%, then SP = 120% of CP.

K) If an article is sold at a loss of say, 20%, then SP = 80% of CP.

hope it helps :)