Step-by-step explanation:
Carmen's water bottle = 1.8 litres ≈ 2 litres
Jorge's water bottle = 2[tex]\frac{2}{5}[/tex] = 2.4 litres ≈ 2 litres
Therefore, from estimate, Jorge's water bottle does not hold half litre more of water than Carmen's.
Actual difference = 2.4 - 1.8 = 0.6 litres