Question

pedro comprou 9 pacotes de bolacha .cada pacote contem 400 gramas . quantasgramas de bolacha ele comprou a mais de 2 quilos

Answer 1

9 . 400 = 3600g

1kg = 1000g

3600/1000 = 3,6kg

3,6 -2 = 1,6kg

Answer 2

9 × 400 = 3600 grams

2 kilos = 2000 grams

9/3600 = x/2000
3600 x = 9 . 2000
3600 x = 18000
x = 18000 / 3600
x = 5 pacotes