Question 564138
Since she saved the same number of each type
the total must be even. That means she could have
10, 8, or 6 coins, so she could have saved
{{{ 5*20 + 5*50 = 100 + 250 }}}
{{{ 100 + 250= 350 }}}
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{{{ 4*20 + 4*50 = 80 + 200 }}}
{{{ 80 + 200 = 280 }}}
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{{{ 3*20 + 3*50 = 60 + 150 }}}
{{{ 60 + 150 = 210 }}}
She could have saved $3.50, $2.80, or $2.10