Question

The ratio of the C.P. and S.P. of an
article is 20:21. What is the gain
percent?​

Answer 1

Answer:

according to question :-

let :

CP = 20x

SP = 21x

gain = 21x-20x = 1x

now gain % = gain / CP * 100 = x/20x * 100 = 5%

gain % = 5%

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Answer 2

Answer:

let the c.p. be 20x and s.p. be 21x

difference between c.p. and s.p.=

21x - 20x = 1x

the gain percent be x\ 20x × 100 = 5%