Solve the following problems. Round dollar amounts to the nearest cent. Round other amounts to the nearest tenth. Write rates as percents to the nearest tenth of a percent. (for each correct answer)
Last month, Fred Gerhardt started working as an apprentice machinist. One of his first projects was to reduce the diameter of a metal shaft from 0.180 inch to 0.162 inch. By what percent did he reduce the diameter of the shaft? ______
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