Respuesta :

Answer:

n = 0.0025

Step-by-step explanation:

400g —————> 1kg

Then

400g —————> 1000g

or 1000/400 = 2.5 ⇔ 400 × 2.5 = 1000

Then

1g ———————> 2.5 × 1 = 2.5g = 0.0025kg