If 2 gallons serves six people, how many gallons are needed to serve 90 people?

30 gallons

Step-by-step explanation:

90÷6=15

15×2=30

30

Step-by-step explanation: when you device 90 by 6 you get 15 that means it takes 15 groups of 6 people to get 90 people so if it’s two gallons per 6 people simply multiply 2 by 15

Hope this helps you!

  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 daysthe sum or difference of the miles driven on the last two daysthe 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 drivenaverages (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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About the other answer choices

Any relationship between only the given two numbers will not tell you anything about the unknown third number.