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Question : Sita sold a whiteboard marker set at 10% profit. On selling it for Rs. 20 more, she would have earned a profit of 15%. What is the cost price of the whiteboard marker set?

Option 1: Rs. 300

Option 2: Rs. 350

Option 3: Rs. 450

Option 4: Rs. 400


Team Careers360 13th Jan, 2024
Answer (1)
Team Careers360 16th Jan, 2024

Correct Answer: Rs. 400


Solution : Given: Sita sold a whiteboard marker set at 10% profit.
Also, selling price with 15% profit - selling price with 10 % profit = Rs. 20
Let the Cost Price of the whiteboard marker be Rs. $x$.
Since, the selling price with 15% profit – selling price with 10 % profit = Rs. 20
⇒ $(\frac{115}{100})\times x - (\frac{110}{100})\times x=20$
⇒ $\frac{5x}{100} = 20$
⇒ $x=400$
So, the cost price is Rs. 400.
Hence, the correct answer is Rs. 400.

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