Question

Q15)Rita sold a watch for Rs 190 thus bearing a loss of 5%.The cost price of the watch is *​

Answer 1

Step-by-step explanation:

refer to the attached image

Answer 2

Solution:-

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ANSWER:-

• Cost price of the watch is Rs 200.

GIVEN:-

• Selling price of the watch = Rs 190
• Loss beared by her = 5%

TO FIND:-

• Cost price of the watch = ?

FORMULA:-

$\to\sf{CP\:when\:Loss\%\:is\:given=\dfrac{SP\times100}{100-Loss}}$

SOLVING BY APPLYING THE FORMULA:-

• Cost price of the watch = $\to\sf{CP\:when\:Loss\%\:is\:given=\dfrac{190\times100}{100-5}}$
• Cost price of the watch = $\to\sf{CP\:when\:Loss\%\:is\:given=\dfrac{19000}{95}}$
• Cost price of the watch = $\to\sf{CP=\dfrac{19000}{95}}$
• Cancel 19000 by 95 = 200
• Cost price of the watch = Rs 200

So, the cost price of the watch is Rs 200.

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

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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