Question 1050639
.05Ax1 = .05Bx2 = .05Cx3
A = 2B
C = (2/3)B
A + B + C  = $7700
2B + B + (2/3)B = $7700
6B +3B + 2B = $7700*3
11B = $7700*3
B = $7700*3/11 
B = $2100
A = $4200
C = $1400
A - C = $2800
a.