Carol H. answered • 09/06/17

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Let x = Jim's contribution

Let 2x - 400 = John's contribution

x + 2x - 400 = 950

3x = 1350

x = $450 - Jim's contribution

2x - 400 = 2(450) - 400 = $500 - John's contribution

Scott, you should have contacted us sooner. :)