Question 155493
.10x+.07(14,000-x)=1,280
.10x+980-.07x=1,280
.03x=1,280-980
.03x=300
x=300/.03
x=10,000 invested @ 10%
14,000-10,000=4,000 invested @ 7%
Proof:
.10*10,000+.07*4,000=1,280
1,000+280=1,280
1,280=1,280