0.17 A shopkeeper allows a discount of 10% on an article and still mak

1.	0.17 A shopkeeper allows a discount of 10% on an article and still makes a profitof 25%. What will be the cost price for an article whose marked price is 900.
Answer» let the COST price of the article US 100 then if shopkeeper allows 10 % discount price will be 90 . and 25 % PROFIT MEANS $\frac{ 90\times25 }{100} = 22.5$ then the price will be 90 + 22.5 = 112.5 if 112.5 on 100 then $\frac{112.5}{100} = \frac{900}{x}$ 112.5 × x = 90000 x = $\frac{90000}{112.5} = <klux>800</klux>$ their fore the cost price of that article is equal to 800 mark as brainlist

0.17 A shopkeeper allows a discount of 10% on an article and still makes a profitof 25%. What will be the cost price for an article whose marked price is 900.

Answer»

let the COST price of the article US 100

then if shopkeeper allows 10 % discount

price will be 90 .

$\frac{ 90\times25 }{100} = 22.5$

then the price will be 90 + 22.5

= 112.5

if 112.5 on 100 then

$\frac{112.5}{100} = \frac{900}{x}$

112.5 × x = 90000

x =

$\frac{90000}{112.5} = <klux>800</klux>$

their fore the cost price of that article is equal to 800