Question 1084988
A = 9/10S
T = 1/10S
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A+T+S = 2,000,000 substitute for A and T
9/10S+1/10S+S = 2,000,000 
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Now, 9/10+1/10 = 10/10 = 1 so we now have S+S = 2S
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2S = 2,000,000
S = 1,000,000 this is Scott's portion
1,000,000*9/10 = 900,000 this is Alice's portion
1,000,000*1/10 = 100,000 this is Tricia's portion