The apple is half the mango, so apple = 1 unit and mango = 2 units. Together = 3 units = 870 g.<br><br>[[model:questions/solutions/q3430.png]]<br><br>• 3 units → 870 g<br>• 1 unit → 870 ÷ 3 = 290 g<br>• Mango = 2 units → 2 × 290 = 580 g<br><br>The mango weighs 580 g.<br>Check: apple 290 + mango 580 = 870 g. ✓