Question

the cost of 15 article is equal to the selling price of 12 article find the profit percent​

Answer 1

Answer:

I don't know the answer but I will tell you afterwards

Answer 2

Let CP of each article be Rs. 1
CP of 12 article = Rs.12, SP of 12 article = Rs.15
Gain = (3/12 *100)% = 25 %