Question 22101
Let x = amount invested at 5%
2x = amount invested at 7%


Total interest=
.05x + .07(2x) = 760
.05x + .14x = 760
.19x = 760

{{{(.19x)/.19 = 760/.19}}}
x= $4000 at 5%
2x= $8000 at 7%


Check:

.05(4000)+.07(8000)
$200 + $560
$760
It checks!!


R^2 at SCC