Answer:
C. the total number of miles driven for the three days
Step-by-step explanation:
You are given two bits of unrelated information (miles driven on Day 1 and on Day 3). You are asked for a third bit of information (miles driven on Day 2).
Missing is a relationship between the given bits of information and the desired bit of information. That relationship could take any of many possible forms:
- the sum or difference of the miles driven on the first two days
- the sum or difference of the miles driven on the last two days
- the sum of the given miles driven and the unknown miles driven (the total miles driven)
- the difference of the given miles driven and the unknown miles driven
- averages (instead of sums) for any of the combinations mentioned above.
- ...
Of the possibilities listed above, the one that appears in the answer choices is ...
the total miles driven.
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<em>About the other answer choices</em>
Any relationship between only the given two numbers will not tell you anything about the unknown third number.