To convert 1650 to a decimal and a percentage, you first need to understand what you are converting it relative to.
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Decimal Conversion: If you want to convert 1650 to a decimal form, you typically would divide it by 100, making it 16.50. However, if you are looking for its relationship to 100, you'd express it as a decimal of a whole (where the number is treated as a fraction of 100): \[ \frac{1650}{100} = 16.5 \]
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Percentage Conversion: To convert 1650 to a percentage, you simply express it over a given base, like 100 (similar to getting the decimal above): \[ \frac{1650}{1} \times 100% = 165000% \]
Given your options, none of them are correct for converting "1650" in the context presented. If you clarify the base you intended for conversion, I could provide a more precise answer.