Question

A man buys a book rupees 80 and salls it for rupees 100 his gain % is_____​

Answer 1

Answer:

20%

Step-by-step explanation:

This is easy

80+___ = 100

:- 20%

Answer 2

Answer:

20

Step-by-step explanation:

if we do 80-100

amount of book = 80

amount man has = 100

amount he gain = 80-100= 20