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Mathematics 17 Online
OpenStudy (anonymous):

The blueprint for a house has a scale of 1 cm = 3 ft. What would be the actual length of a wall that was 5 cm on the blueprint?

OpenStudy (radar):

1cm : 3 ft :: 5cm: x ft The product of the means = product of the extrmes 3 X 5 = 1 X x x= 15 ft. The actual length of the wall is 15 feet.

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