Let a car = 1 unit. Each truck is 1 unit + $5, so 5 trucks = 5 units + 5 × $5. With 3 cars that is 8 units + $25 = $233.<br><br>[[model:questions/solutions/q3244.png]]<br><br>• 3 cars + 5 trucks = 3 + 5 = 8 units, plus 5 × $5 = $25 → $233<br>• 8 units → $233 − $25 = $208<br>• 1 unit (car) → $208 ÷ 8 = $26<br><br>A toy car costs $26.<br>Check: 3($26) + 5($31) = $78 + $155 = $233. ✓