Question

3. The cost price of 10 articles is equal to the selling price of 9 articles. Find the gain per centthe cost price of 10 articles is equal to the selling price of 9 articles find the gain percent ​

Answer 1

Answer:

cost price of 10 articles= selling price of 9 articles

Let the cost price of 1 article be= x

Then ,cost price of 10 x = selling price of 9 articles

therefore, x=9/10 =0.9

let CP of one article = 1 Rupee

then 10 article be =10 rupees

selling price of one article = 1

gain = selling price - cost price( formula)

=10-9=1

gain percent = gain / cost price ×100

( formula )

=1/10×100

=10%= gain percent