Puzzle 6) Magical Scarf

Puzzle

A magic rectangular scarf shrinks its length to ½ and width 1/3 whenever its owner makes a wish. After three such wishes, its surface was 1 cm. What was the original width, if the original length was 4 cm?

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Important points of puzzle:

1. The Magical Scarf was rectangular in shape.
2. After making a wish, its length and width get shrink by ½ and 1/3 respectively.
3. Owner makes three wishes.
4. After three wishes, Surface of the scarf gets reduce to 1 cm.
5. Original length was 4 cm.
6. TASK: You have to find out the original width of the Scarf.

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Answer

54 cm

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Reason

Let, the width of the scarf after three wishes be x’. Now, we have original length of the scarf =4 cm.

After three wishes, length of the scarf will be = 4/2=2/2=1/2

It is given that the surface of reduced scarf is 1 cm.

Therefore, Surface=x’ * length => x’=2*1=2.

The original length of the scarf= x’*3*3*3 = 2*3*3*3 = 54 cm.