Question

The C.P of 10 articles is equal to the S.P of 9 articles. Find the gain per cent​

Answer 1

Answer:

Formula= gain/selling articles×100

10-9/9×100

1/9×100

100/9=11(1/9) %

Answer 2

$\textbf{\underline{\underline{According\:to\:the\:Question}}}$

Assume the CP of 1 article be 1 ruppes

★Hence,

★CP of 10 articles :-

= 1 x 10

= Rs. 10

★Therefore by question :-

SP of 9 articles = CP of 10 articles

SP of 9 articles = 10 ruppes

★CP of 9 articles.

= 1 x 9

= Rs. 9

★Therefore,

Profit = Selling price of 9 articles - Cost price of 9 articles

Profit = 10 - 9

★Profit of 9 articles :-

= Rs. 1

$\tt{\rightarrow Profit =\dfrac{Profit}{Cost\;Price}\times 100}$

$\tt{\rightarrow Profit =\dfrac{1}{9}\times 100}$

★Gain or Profit = 11.11 %