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A man bought wrist watch for N150 but was only able to sell it for...

Mathematics
JAMB 1982

A man bought wrist watch for N150 but was only able to sell it for N120. Find the loss per cent on the transaction

  • A. 25%
  • B. 11%
  • C. 20%
  • D. 80%
  • E. 30%
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Correct Answer: Option C
Explanation

Loss% = \(\frac{\text{actual loss}}{\text{cost price}}\) x 100%

\(\frac{N150 - N120}{N150} \times 100%\)

\(\frac{N30}{N150} \times 100%\)

= 20%


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