Question

Hp is equal to 12 rupees gain is equal to 20% find the cp

Answer 1

if sp =12
gain = 20 percent of cost
let the cost be =x
gain = x *20/100
=x* 1/5
= x/5

sp = x+ x/5
sp= 6x/5
now
12= 6x/5
60 = 6x
x= 10 rupees