Question

14. The ratio of cost price and selling price of an article is 20 : 21. What is the gain per cent
on it?
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Answer 1

Answer:

when cp is 20 sp is 21 then when cp is 100 then sp is 21× 5 = 105

so profit is 5%

Answer 2

Answer:

let the cp be 20 and sp be 21.

so gain is 1

thus gain percent is

(gain/cp)×100%

=(1/20)×100%

=5% profit

thus there is 5% profit.

hope this answer helps you.