Question 179735
let x and y be the amount invested at 5% and 7% respectively
:
x+y=2500...........eq 1
.05x+.07y=160......eq 2
:
rewrite eq 1 to x=2500-y and plug that value into eq 2
:
.05(2500-y)+.07y=160
:
125-.05y+.07y=160
:
.02y=35
:
{{{highlight(y=1750)}}}dollars invested at 7%
:
{{{highlight(x=2500-1750=750)}}}dollars invested at 5%