A) \[\frac{21}{25}\]
B) \[\frac{6}{19}\]
C) \[\frac{8}{17}\]
D) \[\frac{22}{25}\]
Correct Answer: D
Solution :
(d): Let traction be \[\frac{x}{y}\] \[\therefore \frac{x+20}{y-4}=2\] and \[\frac{x-4}{y+20}=\frac{2}{5}\Rightarrow x+28=2y\] and, \[5x-60=2y\] \[\Rightarrow 4x=88\Rightarrow x=22\therefore y=25\]
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