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Triangle areas

Source: 2008 SDMO Middle School Problem 3

August 24, 2016
geometryNEEDS DIAGRAMSDMO Middle School2008 SDMO

Problem Statement

In the diagram, AD:DB=1:1AD:DB=1:1, BE:EC=1:2BE:EC=1:2, and CF:FA=1:3CF:FA=1:3. If the area of triangle ABCABC is 120120, then find the area of triangle DEFDEF.
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