Try this beautiful Problem based on Mathematical Imagination from Math Kangaroo (Ecolier) 2010 Problem 16.
On the playground some children measure the length of the playground with their strides. Anni makes 15 Strides, Betty 17, Denis 12 and Ivo 14. Who has the longest stride?
Pattern
Mathematical Imagination
Math Kangaroo (Ecolier) 2010 Problem 16
Denis
Try to think about the length of each stride.
Remember you want to measure same length.
That means if you have smaller strides you need more strides.
And if you have longer strides you will need lesser number of strides.
Now check who used the least number of strides.
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