Question 161573
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Let {{{x}}} amount invested @ 8%
so the remaining, {{{4000-x}}} was invested @9%
Putting into eqn with interest of $350:
{{{0.08x+0.09(4000-x)=350}}}, EQN 1
{{{0.08x+360-0.09x=350}}}
{{{360-350=0.09x-0.08x}}}
{{{10=0.01x}}} -------> {{{cross(10)1000/cross(0.01)=cross(0.01)x/cross(0.01)}}}
{{{x=1000}}}, AMOUNT INVESTED @ 8%
{{{4000-1000=3000}}}, AMOUNT INVESTED @ 9%
Check via EQN 1
{{{0.08(1000)+0.09(3000)=350}}}
{{{80+270=350}}}
{{{350=350}}}
Thank you,
Jojo</pre>