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Question : $\frac{2}{5}$ of the marked price of an item is equal to $\frac{4}{7}$ of its cost price. If a discount of 15% is given on its sale, then what is the approximate profit percentage earned?

Option 1: 19.84%

Option 2: 23.63%

Option 3: 21.43%

Option 4: 14.28%


Team Careers360 9th Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 21.43%


Solution : $\frac{2}{5}$ × marked price = $\frac{4}{7}$ × cost price
Marked price = $\frac{10}{7}$ × cost price
Discount = 15% of marked price
= $\frac{15}{100}×\frac{10}{7}$ × cost price
Selling price = marked price – discount
= $(1-\frac{15}{100})×\frac{10}{7}$ × cost price
= $\frac{85}{100}×\frac{10}{7}$ × cost price
= $\frac{85}{70}$ × cost price
Profit = selling price – cost price
= $\frac{85}{70}$× cost price – cost price
= $\frac{85-70}{70}$× cost price
= $\frac{15}{70}$× cost price
Profit percentage = $\frac{\text{profit}}{\text{cost price}}×100$
= $\frac{15}{70}×100$
= 21.43%
Hence, the correct answer is 21.43%.

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