It took Kelly
7
2
3
\displaystyle {7}\frac{{2}}{{3}}
7
3
2
hours to fly from City A to City B then it took her another
2
4
7
\displaystyle {2}\frac{{4}}{{7}}
2
7
4
hours to fly from City B to City C. Kelly flew a total of
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hours.
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\displaystyle
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Enter DNE for Does Not Exist, oo for Infinity