A magic wish-granting rectangular belt always shrinks to 1/2 its length and 1/3 its width whenever its owner makes a wish. After three wishes, the surface area of the belt's front side was 4 cm2.
What was the original length, if the original width was 9 cm?

• ans 96cm
  L(let length) , 9cm (width given) of the rectangular belt.
  I wish : L/2,9/3
  II wish : L/2*2 , 9/3*3
  III wish : L/2*2*2 , 9/3*3*3
  After three wishes surface area of belt's front side = length*width = 4cm^2
  =>L/8*1/3=4
  =>L=4*24=96CM
  
• 10 years agoHelpfull: Yes(0) No(0)