me thank yu tri tu sae yu hav 5400$
& yu get INTEREST on it...sum at 7% & sum at 10%
total interest for 1 yeer=468$
so 7%*x+10%*y=468$
x+y=5,400$, so y=5400-x
0.1*x+0.07*(5400-x)=468
0.1x -0.07x +378=468
0.03x=468-378=90
x=90/0.03=3,000
y=5400-3000=2,400