The leaning tower

A trapezium with its diagonals. Two areas are given. What faction is coloured?

Scroll down for a solution to this problem.


The coloured fraction is y/(x+y).

Solution by Kamran Zamani.

Visual solution

Solution without words by David Andriana.


La torre pendente di Pisa
With an unstable and slight foundation
All of marble stones in gothic style,
A tower for observation
Never one thought about it’s destruction
As a solution
Some tried a good restauration
and stabilisation
The tower remains a symbol of elevation


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