Question

if the cost price of 12 articles is equal to selling price of 9 articles then the gain percent is a) 30% b) 40% c) 35% d) none​

Answer 1

Answer: D)none

Step-by-step explanation: let the cp of 12 articles be a.

C.P. of 12 articles= S.P. of 9 articles.

C.P. of 1 article= a/12

S.P. of 1 article=a/9

Profit=a/9-a/12=(4a-3a)/36

                       = a/36

Profit%=(P/C.P.)*100 next part is shown in this picture

Answer 2

Answer:

The gain percentage for the given data will be equal to 33%.

Step-by-step explanation:

Consider that the selling price of one article $= Rs.1$

Given that the cost price of 12 articles = Selling price of 9 articles$=Rs.9$

Then selling price of 12 articles $=Rs.12$

Therefore the profit $=Rs.12-Rs.9=Rs.3$

We know Profit % $=(\frac{Profit}{Cost Price})*100$

                              $=(\frac{3}{9}*100 )$$=33.33$%

Therefore the profit percentage will be 33.33%.

So the option d is correct.