Question

15. If the selling price of 10 pencils is equal to the
cost price of 12 pencils, the gain per cent is
2
(a) 16%
(b) 18%
3
(c) 20%
(d) 25%​

Answer 1

Answer:

20%

Step-by-step explanation:

let selling price of 10 pencil be x

selling price of 12 pencil = 12x/10

profit = 12x/10 - x (cost price of 12 pencil is equal to selling price of 10 pencil)

profit = (12x-10x)/10

= 2x/10

= x/5

percent profit = x/5*100/x

= 20%