Question 127450
.1x+.11(50,000-x)=5,200
.1x+5,500-.11x=5,200
.01x=5,200-5,500
-.01x=-300
x=-300/-.01
x=$30,000 invested @ 10%.
PROOF:
.1*30,000+.11(50,000-30,000)=5,200
3000+.11*20,000)=5,200
3000+2,200=5,200
5,200=5,200