A TV is purchased at Rs. 5000 and sold at Rs. 4000, find the lost percent?

A) 100

B) 20

C) 25

D) 28

C.P = 5000   ,   S.P = 4000 

Loss = C.P –  S.P 

Loss = 5000-4000 = 1000

Loss % = (Loss/C.P) * 100

Loss %= ( 1000/5000) * 100

             =  20%