Question 1022012
x amount to bank A, y amount to bank B
but x+y=8000 so 
.'.y=8000-x
740=(y10/100)+(x9/100) i meant 10% & 9% of y and x
740=(10y+9x/100)
740=(10(8000-x)+9x/100)
740=(80000-10x+9x/100)
multiply r.h.s with 100 
74000=80000-x
74000-80000=-x
-x=-6000
x=6000, y=2000