W is directly proportional to U If W 5 when U 3... - JAMB Mathematics 2010 Question
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
\(\frac{35}{6}\)
correct option: a
W (\alpha) U
W = ku
u = (\frac{w}{k}); (\frac{2}{7}) x (\frac{3}{5})
= (\frac{6}{35})
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