Question 1164327
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Betty received 25% less than Cathy  -->  Betty received 3/4 as much as Cathy.<br>
Let 3x be the amount Betty received and 4x be the amount Cathy received.<br>
The percentages the three sisters received add up to 1 (=100% = 1.00):<br>
{{{.30+3x+4x = 1.00}}}
{{{7x = 0.70}}}
{{{x = 0.10}}}<br>
Betty's share was 3x = 0.30 = 30%; Cathy's share was 4x = 0.40 = 40%.<br>
Betty's share of 30% of the total was $225; the total was $225/0.30 = $750.<br>
ANSWER: The three sisters shared a total of $750.<br>