Question 1135582
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The ratio in which Rob and Chuck contributed to the original investment is 22000:18000 = 11:9.  So the $13,000 Bob receives in payment from Rob and Chuck needs to be divided in that same ratio.<br>
Using a standard method for solving ratio problems...<br>
let 11x be the amount Rob pays to Bob
let 9x be the amount Chuck pays to Bob<br>
11x+9x = 13000
20x = 13000
x = 650<br>
The amount Rob should pay Bob is 11x = $7150; the amount Chuck should pay Bob is 9x = $5850.