A boy has $60\, kg$ weight. He wants to swim in a river with the help of a wooden log. If relative density of wood is $0.6$, what is the minimum volume of wooden log? (density of river water is $1000\, kg/m^3$)
  • A$0.66\, m^3$
  • B$150\, m^3$
  • C$\frac{3}{1}m^3$
  • D$\frac{3}{20}m^3$
AIIMS 2010, Medium
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