Answer:
He will be able to carry the 6 boxes one go
Step-by-step explanation:
[tex]1000g = 1kg \\720g = \frac{720 \times 1}{1000} \\ = 0.72kg[/tex]
So each box is 0.72kg
then 6 boxes =
[tex]0.72 \times 6 \\ = 4.32[/tex]
and that's approximately 4 so in total the the 720g is actually 4kg and can be carried at once