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1 March, 14:12

Sam works two jobs, one at the zoo and the other at

the library. He drives 24 miles round-trip to the zoo

and 9 miles round-trip to the library. He never works

two jobs in the same day. His car has a 15 gallon

gas tank and gets 20 miles per gallon. If his tank is

now empty and he has worked 12 days at the library

since his last filling up, how many days did he work

at the zoo?

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Answers (1)
  1. 1 March, 14:35
    0
    Full tank = 15 gallon

    15 x 20 = 300 miles

    A full tank can travel 300 miles

    12 days at the library:

    12 x 9 = 108 miles

    The rest of the miles were for going to the zoo

    300 - 108 = 192 miles

    Number of round trips to the zoo:

    192 : 24 = 8

    He worked 8 days at the zoo.
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