Question

brainly a seller sells a laptop on a profit of 15% on a cost price.if the selling price of a laptop is 420$.find the cost price?​

Answer 1

Answer:

Cost price= 357

Step-by-step explanation:

420 x 0.15 ( To find the profit the percentage is converted to decimal)

420x 0.15= 63$ (The profit)

Subtract the profit to the selling price

420-63= 357$

Answer 2

Answer:

The cost price of the laptop is 357$ .

Step-by-step explanation:

Given :

Profit percentage on a laptop = 15%

Selling price of the laptop = 420$

To find :

The cost price of the laptop

Taken :

To find the cost price use this formula -:

$\boxed{\sf{C.P=\dfrac{100\%-P\%}{100\%}\:\times\:S.P}}$

Where,

C.P = Cost price

P% = Profit percent

S.P = Selling price

Solution :

$\longrightarrow\sf{C.P=\dfrac{100\%-15\%}{100\%}\times420}$

$\longrightarrow\sf{C.P=\dfrac{85\%}{\cancel{100\%}}\times\cancel{420}}$

$\longrightarrow\sf{C.P=85\times4.2}$

$\longrightarrow\sf{C.P=357}$$

So , the cost price is 357$