Math

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A man was given $x. He spent 50 cents a day. How much money had he left after
A) 10 days?
B) 2 weeks?
C) t days?

  • Math -

    1st term = x
    2nd term = x-.5
    3rd term = x - 2(.5)
    ....
    10th term = x - 9(.5) = x - .45
    ...
    14th term = x - 13(.5) = x - 6.5

    t th term = x - (t-1)(.5)

    I assume you are studying sequences and series.
    Do you recognize the arithmetic sequence pattern ?

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