Liam bought a 450-gram box of blueberries, a 1.2 kilogram watermelon, and 0.75 of a kilogram of apples. What is the total mass, in grams, of the fruit Liam bought??

2400 grams

Step-by-step explanation:

First, let's convert all the measurements to grams

1.2 kilograms = 1,200 grams

0.75 kilograms = 750 grams

450 grams are already in the correct unit

450 + 750 + 1200 = 2400 grams

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yes. we do proportions in probabilities.