Question 165655
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Let {{{x}}} =amount invt. @ 10-1/2%
So, {{{18000-x}}} = amount invt. @ 9-1/4%
Showing into eqn. with simple interest:
{{{0.105(x)+0.0925(18000-x)=1827.50}}}
{{{0.105x+1665-0.0925x=1827.50}}}
{{{0.0125x=1827.50-1665=162.50}}}
{{{cross(0.0125)x/cross(0.0125)=cross(162.50)13000/cross(0.0125)}}}
{{{x=13000}}} -----------------> amount invt. @ 10-1/2%
{{{18000-13000=5000}}} --------> amount invt. @ 9-1/4%
It make sense to invest more at higher interest I guess.
Check,
{{{0.105(13000)+0.0925(5000)=1827.50}}}
{{{1365+462.50=1827.50}}}
{{{1827.50=1827.50}}}
Thank you,
Jojo</pre>