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OpenStudy (anonymous):
the ratio of the length and the width of the floor of a building is 7:4. they differ by 45 ft. what's the floor area of the building?
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hartnn (hartnn):
let the length be 7x so width = 4x difference = 45 so 7x-4x=45 can u find x from here?
OpenStudy (anonymous):
let l = w+45 thus l:w= w+45:w =7:4 Can you simplify this?
OpenStudy (anonymous):
yep. thanks!
hartnn (hartnn):
so what area did u get ?
OpenStudy (anonymous):
.
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