Convert to the same unit, find Container B, then add.<br><br>
&bull; Container A = 750 ml = 0.75 l<br>
&bull; Container A has 0.45 l LESS than B, so B = A + 0.45<br>
&bull; Container B = 0.75 + 0.45 = 1.2 l<br>
&bull; Total = 0.75 + 1.2 = 1.95 l<br>
<br>
Final Answer: 1.95