Question

The selling price of 12 articles is equal to the cost price of the 15 articles find the gain percent?

Answer 1

gain =cost price -selling price
=15 - 12=3
gain=3
gain percent =3/15×100
gain percent=20

Answer 2

Let the C.P of 1 article be = x

S.P of 12 articles = 15x
C.P of 15 articles = 12x
S.P of 15 articles = 15x

Profit = S.P - C.P
15x - 12x
P = 3x
Profit percent = P/C.P × 100
3x/12 × 100
Profit percent = 25 %