Let x be the measure of the common part. Then A received x dollars; B received 2x dollars; and C received 3x dollars. So the three received x + 2x + 3x = 6x dollars, and this sum is 6000 dollars: 6x = 6000 dollars. Hence, x = 1000 dollars. Thus A received $1000, B received $2000, and C received 3000 dollars. Check. 1000 + 2000 + 3000 = 6000. ! Correct !