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30 September, 15:37

Rita earned $20 each day. lauren earned $2 the first day, $3 the second day, $4 the third day, and so on. richard earned $25 a day. lisa earned $1 the first day, $2 the second day, $4 the third day, and $8 the fourth day, and so on. who earned the most money in 10 days?

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  1. 30 September, 16:58
    0
    Rita:

    $20 * 10 = $200

    Lauren:

    2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 = $65

    Richard:

    $25 * 10 = $250

    Lisa:

    1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 512 = $1023

    Lisa earned the most.
  2. 30 September, 17:00
    0
    Lisa earn the most money in 10 days
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