Question

A dealer sells a toy for RS 24 and gains as much per cent as the cost prise of the toy find the cost prise of the toy​

Answer 1

Answer:

20

Step-by-step explanation:

SP of toy is 24

let CP = x

Gain%=SP-CP/CP*100

x=24-x/x*100

x^2+100x-2400=0

x^2+120x-20x-2400=0

(x+120)(x-20)

x=-120. x=20

negative ans will be ignored

so ans is 20