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5 October, 20:54

A 6-foot person standing 15 feet from a streetlight casts a 15-foot shadow. Two similar triangles are formed. One triangle is formed by the person and the shadow that the person casts. A second triangle is formed by the streetlight and the ground from the base of the streetlight to the end of the shadow.

The street light is __ times taller than the person

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  1. 5 October, 21:21
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    6/15=height of lamp / (15+15); 6/15=height of lamp/30; height of lamp = (30/15) 6=2*6, 2 times taller.

    (Lamp is 12 feet tall)
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