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A drawing of a surfboard in a catalog shows it's length as 8 4/9 inches. Find the actual length of the surfboard if 1/2 inch length on the drawing corresponds to 3/8 foot of actual length. 



Answer :

crisforp
(1/2) i _ _ _ (3/8) f => 1 i _ _ _ (3/4) f => 8 i _ _ _ 6 f;
(1/2) i _ _ _ (3/8) f => (8/9)(1/2) i _ _ _ (8/9)(3/8) f =>(4/9) i _ _ _(1/3) f;
8 4/9 f _ _ _ 6 1/3 f.

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