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Let 6u = amount left for each of the guys

          Left            Spent

H    [—6u—-] [-2u-]                                                  H : 75% -> 6u  => 25%  = 2u

S     [—6u—-] [——–9u———-]                             S:  (2/5) -> 6u => (3/5) = 9u

D    [—6u—-] [—3u—]                                               D:  (2/3) -> 6u => (1/3) = 3u

Total they have = 4000

So 3(6u) + 2u + 9u + 3u = 4000

32u = 4000

u = 125

Salim has 15u = 15 x 125 = $1875 at first.

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