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XXLL=XXC=80
80
In Roman numerals, XX represents 20 and C represents 100. According to the rules of Roman numerals, a smaller value numeral can only be placed before a larger value numeral to subtract from it. Since XX (20) is smaller than C (100), it cannot be written in the reverse order as XXC (80) because it would violate the subtractive principle of Roman numerals.
Let s denote distance v denote speed t denote time. s = integral(v)dt If speed is constant, s = vt.
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