The wife gets $$\frac{1}{3}$$ = $200,000, so the pot is $600,000. Daughter gets $$\frac{1}{4}$$ of the remainder, son gets $$\frac{3}{20}$$ of the remainder, and the rest is charity.

[[model:questions/solutions/q4372.png]]

• Wife → $$\frac{1}{3}$$ of whole = $200,000 ⇒ whole = $200,000 × 3 = $600,000
• Remainder → $600,000 − $200,000 = $400,000
• Daughter → $$\frac{1}{4}$$ × $400,000 = $100,000
• Son → $$\frac{3}{20}$$ × $400,000 = $60,000
• Charity → $400,000 − $100,000 − $60,000 = $240,000

$240,000 was given to charity.
Check: $200,000 + $100,000 + $60,000 + $240,000 = $600,000. ✓