Question 631436
Let {{{ a }}} = shares of WM stock purchased
Let {{{ b }}} = shares of M stock purchased
given:
{{{ 59a + 28b = 6000 }}}
{{{ a = 4b }}}
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By substitution:
{{{ 59*4b + 28b = 6000 }}}
{{{ 236b + 28b = 6000 }}}
{{{ 264b = 6000 }}}
{{{ b = 22.73 }}}
and
{{{ a = 4b }}}
{{{ a = 90.91 }}}
Can she buy 91 shares of WM and 22 shares of M?
{{{ 59a + 28b = 6000 }}}
{{{ 59*91 + 28*22 = 5369 + 616 }}}
{{{ 5369 + 616 = 5985 }}} yes
She will have {{{ 6000 - 5985 = 15 }}} dollars left over
She can't buy another share of either stock,
since that would put her over $6000