Question 359222
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Hi,
Let x be the amount of money Bob started with. Then Bessy's amount owuld be 6x
3(x+$6)= (6x + $6)
simplify and Solve
3x + 18 = 6x + 6
12 = 3x 
$4 = x
Before earning $6:  Bob had 4$ and Bessy $24
After earning $6:  Bob had $10 and Bessy $30
checking our answer
3*10 = 30