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1 oz wt. = 0.12 cup
1 cup = 8.35 oz wt.
Definition of ounces of water provided by TheFreeDictionary
A fluid ounce is a unit of volume (also called capacity) typically used for measuring liquids. Whilst various definitions have been used throughout history, two remain in common use: the imperial and the United States customary fluid ounce. An imperial fluid ounce is 1/20 of an imperial pint, 1/160 of an imperial gallon or approximately 28.4 ml. A US fluid ounce is 1/16 of a US fluid pint, 1/128 of a US liquid gallon or approximately 29.6 ml.
Definition of US cup of water provided by WikiPedia
Pne U.S. cup of water weighs approximately 81⁄3 avoirdupois ounces. Since an imperial cup of water weighs approximately 10 avoirdupois ounces and five imperial cups are approximately equal to six U.S. cups