Answer:
M = 6400 grams
Explanation:
As we know that the mass of the box will be given as
[tex]m = 6.4 kg[/tex]
now we know that
[tex]1 kg = 1000 g[/tex]
now we have to find the mass of the box in grams so we can use the conversion
[tex]m = 6.4 kg \times (\frac{1000 g}{1 kg})[/tex]
now we have
[tex]m = 6.4 \times 1000 g[/tex]
[tex]m = 6400 g[/tex]
so it is 6400 grams
