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W is directly proportional to U. If W = 5 when U = 3, find...

Mathematics
JAMB 2010

W is directly proportional to U. If W = 5 when U = 3, find U when W = \(\frac{2}{7}\)

  • A. \(\frac{6}{35}\)
  • B. \(\frac{10}{21}\)
  • C. \(\frac{21}{10}\)
  • D. \(\frac{35}{6}\)
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Correct Answer: Option A
Explanation

W \(\alpha\) U

W = ku

u = \(\frac{w}{k}\); \(\frac{2}{7}\) x \(\frac{3}{5}\)

= \(\frac{6}{35}\)

There is an explanation video available below.


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Explanation Video

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