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Question : 40 percent of the selling price of a fan is equal to $\frac4{5}$ of the cost price of the fan. What is the profit percentage?

Option 1: 150 percent

Option 2: 125 percent

Option 3: 100 percent

Option 4: 120 percent


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 100 percent


Solution : Let's the cost price of the fan as CP and the selling price as SP
⇒ 40% × SP = $\frac{4}{5}$​×CP
⇒ 0.4 × SP = $\frac{4}{5}$ ​× CP
Now, let's solve for the selling price SP:
⇒ SP = $\frac{\frac{4}{5}​×CP​}{0.4}$ = $\frac{4}{5}$ × $\frac{1}{0.4}$ × CP = 2 × CP
⇒ Profit Percentage = $\frac{\text{Selling Price − Cost Price}}{\text{cost price}}​$×100 = $\frac{2 × CP – CP}{CP}$×100 = $\frac{CP}{CP​}$×100 = 100%
Hence, the correct answer is 100%.

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