Question

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?

Answer 1

original width = 9cm
width after 3 wishes = (((9/3)/3)/3) = 1/3 cm
length after 3 wishes  = A/w = 4/(1/3) = 4*3 = 12cm
original length = 12*3*3*3=324cm