Question 670566
The ratio of the 1st part to the total is
{{{ 2 / ( 2 + 5 + 8 ) = 2 / 15 }}}
{{{ 2 / 15 = a / 300000 }}}
{{{ a = (2/15)*300000 }}}
{{{ a = 20000*2 }}}
{{{ a = 40000 }}}
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The ratio of the 2nd part to the total is
{{{ 5 / 15 = b / 300000 }}}
{{{ b = (1/3)*300000 }}}
{{{ b = 100000 }}}
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The ratio of the 3rd part to the total is
{{{ 8/15 = c / 300000 }}}
{{{ c = (8/15)*300000 }}}
{{{ c = 160000 }}}
( this part is all you really needed to solve problem )
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{{{ .02a = .02*40000 }}}
{{{ .02a = 800 }}}
and
{{{ .04b = .04*100000 }}}
{{{ .04b = 4000 }}}
and
{{{ .06c = .06*160000 }}}
{{{ .06c = 9600 }}}
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The income from the 6% investment is $9,600