Average of two means the total is twice the average. With ratio 1 : 3, Alfred = 1 unit and Martin = 3 units, so 4 units in all.<br><br>[[model:questions/solutions/q4674.png]]<br><br>• Total → 2 × $34 = $68<br>• 4 units → $68<br>• 1 unit (Alfred) → $68 ÷ 4 = $17<br>• Martin → 3 × $17 = $51<br><br>Alfred had $17 and Martin has $51.<br>Check: ($17 + $51) ÷ 2 = $34 and 17 : 51 = 1 : 3. ✓