Verified answer

Answer:

Profit percentage = Profit / Original cost × 100

[tex] = \frac{40}{70} \times 100[/tex]

= 57.14 %

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[tex]Profit \: Percentage \\ = \frac{Profit}{Original \: Price } [/tex]

[tex] = \frac{40}{70} \times 100[/tex]

[tex] = \frac{4000}{70} [/tex]

[tex] = 57.14 %[/tex]