Question 712604
x=funds in company a
y=funds in company b
x+y=8000 (equation 1)
x+(5x/100)+y+(7y/100)=8496
105x+107y=849600 (equation 2)
sub 1 into 2
105(8000-y)+107y=849600
840000-105y+107y=849600
2y=9600
--->y=4800
sub  y into 1
x+4800=8000
--->x=3200
:)