Question

the selling price of 10 books is equal to thecost price of 12 books. find the profit percent​

Answer 1

Answer:

20%

Step-by-step explanation:

Let the cost price of 1 book is Re 1

Cost of 12 books = Rs 12

Selling price of 10 books = 12

Profit = 12 - 10 = 2

Profit%=(Profit/Cost X 100)%=(2/10 X 100)%=20%

Answer 2

Answer:

Step-by-step explanation:

let the cost price of 1 book be x

then sp of 10 books = 12x

cp of 10 books = 10x

gain = 12x-10x=2x

gain %=2x/10x×100=20%