Total mass in grams of the carton and the 4 boxes is 18.5 kg .
<u>Step-by-step explanation:</u>
Here we have , Monica has 4 boxes to place in an empty carton the mass of each box is 4.5 kilograms the mass of the carton is 500 grams.
We need to find the total mass in grams of the carton and the 4 boxes . Let's find out:
Total mass = Mass of 4 boxes + Mass of empty carton
Mass of 1 box = 4.5 kg
Mass of 4 boxes =
Mass of 4 boxes =
Mass of empty carton = = 0.5 kg
⇒ Total mass = Mass of 4 boxes + Mass of empty carton
⇒ Total mass =
⇒ Total mass =
Therefore, total mass in grams of the carton and the 4 boxes is 18.5 kg.