Hey There,
This is a subtracting fractions problem.
Solutions-
1. Convert [tex]5 \frac{7}{10} [/tex] to an improper question. You do this by multiplying the denominator and the whole number and adding that number to the numerator. The improper fraction would be [tex] \frac{50}{7} [/tex]
2. Now, subtract [tex] \frac{140}{0}- \frac{15}{10} [/tex]
3. The answer to step two should be [tex] \frac{125}{10} [/tex]
Thus, the answer should be [tex] \frac{125}{10}=12 \frac{1}{2} [/tex]
In conclusion, Jeff drives [tex] 12\frac{1}{2} [/tex] miles farther then her sister.
Thank You!