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In a particular year, the exchange rate of naira (N) varies directly with the Dollars{$}....

Mathematics
WAEC 2009
In a particular year, the exchange rate of naira (N) varies directly with the Dollars{$}. If N1122 is equivalent to $8, find the Naira equivalent of $36
  • A. N8976
  • B. N5049
  • C. N140.25
  • D. N31.17
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Correct Answer: Option B
Explanation
N1122 = $8; x = $36

x x $8 = N1122 x $36

\(\frac{N1122 \times $36}{$8}\) = x

x = N5049
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