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Maths Picture Area Puzzle

Maths Picture Area Puzzle Solution - 22 October

The below figure consists of a rectangle and the numbers labeled over the top represents the area of that particular shaded region.

Calculate the area of the green region labeled as '?'











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Solution
The White triangle is similar to the Red triangle
As ratio of areas = ratio of bases when height is same,
Ratio of sides is 2:3
White triangle = 9/4 * Red triangle = 9/2

Thus the Green Region = 5.5 units.