Question 1196781
Incomplete information about the interest and how compounded.  Might intend to be 1 year of interest and one year compounding period.


{{{0.05*m+0.06(m+600)=69}}}

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{{{5m+6m+6*600=6900}}}

{{{11m+3600=6900}}}

.

{{{m=300}}}----------------at 5%
{{{and}}}
{{{m+600=900}}}------------at 6%