Question 268910
we start with $50,000 and send $20,000 to charity. This leaves us with $30,000.
We use the formula = PRT + PRT to get
{{6060 = x(.16)(1) + (30000-x)(.25)(1)}}}
we get
{{{6060 = .16x + 7500 - .25x}}}
and then
{{{6060 = 7500 -.09x}}}
subtract to get
{{{-1440 = -.09x}}}
divide by -.09 to get
{{{16000 = x}}}
So, we invest
16,000 at 16%
14,000 at 25%.