Profit And Loss
Math MCQs

Question :    If a trader gets a loss of 4% by selling an article for $585.60 then, find the cost price.

Correct Answer  $610

Solution & Explanation

Solution

Finding the cost price if the sale price and loss percent are known

The cost price (CP) can be found using the formula, algebraic method, shortcut method, and taking the cost price as 100, 200, 300, 400, 500, or whatever you want. Here the five methods to solve this problem have been given.

Method (1) Using Formula

Finding the cost price using the formula when the sale price and loss percent are known

Given, the sale price (SP) = $585.6

And, the loss = 4%

Then, the Cost Price (CP) = ?

Formula to find the cost price when the sale price and loss percent are known

Cost Price (CP) = ¹⁰⁰/_{100 – gain%} × SP

Thus, the Cost Price (CP)

= ¹⁰⁰/_{100 – 4} × 585.6

= ¹⁰⁰/₉₆ × 585.6

= ⁵⁸⁵⁶⁰/₉₆ = 610

Thus, the Cost Price (CP) = $610 Answer

Method (2) Algebraic Method

Finding the cost price (CP) using the Algebraic Method when the Sale Price (SP) and the loss percent are given

Let the Cost Price (CP) = m

Here given loss = 4%

Calculation of loss

The loss and/or profit is calculated on the cost price (CP)

Formula to find the loss when the Cost Price and the Loss% are given

Loss = loss% of CP

Thus, loss on the cost price of m

= Loss% of m

= 4% of m

= 4% × m

= ²/₁₀₀ × m

⇒ loss = ^{4 m}/₁₀₀

Calculation of Cost Price (CP)

Formula to find the Sale Price (SP) when the Cost Price (CP) and the Loss are given

Sale Price (SP) = Cost Price (CP) – Loss

⇒ 585.6 = m – ^{4 m}/₁₀₀

⇒ 585.6 = ^{100 m – 4 m}/₁₀₀

⇒ 585.6 = ^{96 m}/₁₀₀

After cross multiplication, we get

585.6 × 100 = 96 m

⇒ 96 m = 585.6 × 100

⇒ m = ^{585.6 × 100}/₉₆

⇒ m = ^{585.6 × 100}/₉₆

⇒ m = ⁵⁸⁵⁶⁰/₉₆ = 610

Thus, the Cost Price (CP) = $610 Answer

Method (3) Unitary Method

Finding the cost price (CP) using Unitary Method by taking the cost price (CP) is equal to 100 when the SP and the loss percent are given

Given, the sale price (SP) = $585.6

And, the loss = 4%

Then, the Cost Price (CP) = ?

Let Cost Price (CP) = 100

Thus loss = 4% of 100 = 4

Thus, Sale Price (SP) = Cost Price (CP) – loss

⇒ Sale Price (SP) = 100 – 4

⇒ Sale Price (SP) = 96

∵ If the Sale Price (SP) is 96, then the Cost Price (CP) = 100

∴ If the Sale Price (SP) is 1, then the Cost Price (CP)

= ¹⁰⁰/₉₆

∴ If the Sale Price (SP) is 585.6, then the Cost Price (CP)

= ¹⁰⁰/₉₆ × 585.6

= ^{100 × 585.6}/₉₆ = 610

Thus, the Cost Price (CP) = $610 Answer

Method (4) Shortcut Method (1)

Shortcut Method to find Cost Price (CP) when SP and loss percent are known

Given, the sale price (SP) = $585.6

And, the loss = 4%

Then, the Cost Price (CP) = ?

SP = 96% of CP

⇒ SP = 96% of CP

⇒ 585.6 = ⁹⁶/₁₀₀ × CP

⇒ 585.6 = ^{96 CP}/₁₀₀

After cross multiplication

⇒ 585.6 × 100 = 96 CP

⇒ 96 CP = 585.6 × 100

⇒ CP = ^{585.6 × 100}/₉₆

⇒ CP = ⁵⁸⁵⁶⁰/₉₆ = 610

⇒ CP = $610 Answer

Method (5) Shortcut Method (2)

Shortcut Method (2) to find Cost Price (CP) when SP and loss percent are known

Here loss and the Sale Price are given and the Cost Price is to find

Here as given, the loss = 4%

And the Sale Price = $585.6

This means 100 – loss% of the Cost Price = Sale Price

⇒ 100 – 4% of the Cost Price = $585.6

⇒ 96% of the Cost Price = 585.6

Therefore, 1% of the Cost Price = ^585.6/₉₆

Thus, 100% the Cost Price = ^585.6/₉₆ × 100

= ⁵⁸⁵⁶⁰/₉₆ = 610

Thus the Cost Price (CP) = $610 Answer

Similar Questions

(1) A trader loses 49% by selling an article for $1178.10. For how much should he sell it to get a profit of 48%?

(2) The cost price of an article is $12, and the sale price is $15. Find the profit and profit percent.

(3) A seller gets a profit of 7% by selling a TV set for $4280. If he would have sold it for $4200, then find his profit percent.

(4) By selling some items for $12741.00 a trader earns a profit of 210%. Find the cost price.

(5) John purchased a bicycle in an auction at $80 and sold it at $104. Calculate the profit and profit percent in this sale.

(6) For how much should a trader sell an item to get a profit of 49% if he loses 50% by selling it for $1180.00?

(7) Mr. Steven loses 94% by selling an article for $273.60. For how much should he sell it to get a profit of 93%?

(8) What is the cost price; if a trader earns a profit of 295% by selling some articles for $22949.50?

(9) A peddler buys 11 oranges for $1 and sells 10 oranges for $1 then, find his profit percent.

(10) Find the cost price, if a dealer gets a loss of 31% by selling 400 stocks for $4146.90