Question

An article is sold for Rs 20 at 10% gain, find the cost price.​

Answer 1

Let the cost price be x

Then, selling price would be 1.2x.

When C.P. is Rs. 20, less,

C.P. =x−20

S.P. =1.2x−20

Now, 1.2x−20=1.3×(x−20)

⇒1.2x−20=1.3x−26

⇒1.3x−1.2x=−20+26

⇒0.1x=6

⇒x=60

therefore, the cost price of the article is Rs. 60.

please mark me as brainlist if my answer is correct please