Question

The cost price of 30 articles is equal to selling price of 25 articles.find the gain or loss percentage??

Answer 1

Answer:

LET CP OF ONE ARTICLE BE x

THEN CP OF 30 ARTICLE=30X

A/Q

CP OF 30 ARTICLE=SP OF 25 ARTICLE

30X=SP OF 25 ARTICLE

∴SP OF 1 ARTICLE=30X/25

                               =6X/5

CP OF ONE ARTICLE = X

SP OF 1 ARTICLE=6X/5

SP>CP

PROFIT=SP-CP

            = 6X/5-X

            =X/5

PROFIT%=PROFIT/CP*100

              =X/5*1/X*100

              =20

∴PROFIT=20% ANS

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Answer 2

Answer: The gain % is 20%

Explanation-cost price of 30 articles is equal to the selling price is 25 articles.

Find the gain or loss %.

Solution-According to the question

CP of 30 articles = SP of $25$

So, $\frac{CP}{SP}=\frac{25}{30}$

SP=6, CP=5

Profit $=SP-CP\\=6-5\\=Rs 1$

P% = $\frac{P}{CP}\times 100$

$=\frac{1}{5}\times 100$

$=20$%

Hence, the gain percent is 20%

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