Question 1106924
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If Betty's share was half the sum of the other two, then Betty's share was 1/3 of the total.<br>
Joanna's 1/5 share was $80 less than Betty's share:<br>
{{{(1/3)x-(1/5)x = 80}}}
{{{(2/15)x = 80}}}
{{{x = (15/2)*80 = 600}}}<br>
The sum was $600.