Question

5) By selling an article for Rs 72, there
is a loss of 10% find the cost price
of article
(a)Rs 89
(b) Rs 92
(c)Rs 80
(d)Rs 85​

Answer 1

rs 82 ...............

Answer 2

Solution:-

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ANSWER:-

• Option C is the answer.
• Cost price of the article is Rs. 80.

GIVEN:-

• Selling price of an article = Rs. 72
• Loss on article = 10%

TO FIND:-

• Cost price of the article = ?

FORMULA:-

$\to\bf{CP=\dfrac{SP\times100}{100-Loss}}$

SOLVING BY APPLYING THE FORMULA:-

• CP of the article = $\sf{CP=\dfrac{SP\times100}{100-Loss}}$

• CP of the article = $\sf{\dfrac{72\times100}{100-10}}$

• CP of the article = $\sf{\dfrac{7200}{90}}$

• CP of the article = $\sf{\dfrac{720{\not{0}}}{9{\not{0}}}}$

• CP of the article = $\sf{\dfrac{720}{9}}$

• CP of the article = $\sf{\dfrac{720}{9}}=80$

• CP of the article = Rs. 80

Hence, cost price of the article is Rs. 80.

${\underline{\boxed{\large{\pink{\mathscr{\:All\: Formulae\:of\:Profit\:And\:Loss\:}}}}}}$

1. Profit = (SP > CP) = SP - CP
2. Loss = (CP > SP) = CP - SP
3. Profit% = (Profit × 100 / CP)%
4. Loss% = (Loss × 100 / CP)%
5. SP when Profit Percent is given = (100 + Profit % / 100)× CP
6. CP when Profit Percent is given = (SP × 100 / 100 + Profit %)
7. SP when Loss Percent is given = (100 - Loss / 100)× CP
8. CP when Loss Percent is given = (SP × 100 / 100 - Loss)

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