Question

se 2,5kg de arroz custa R$ 18,00, quanto custa 1,5 toneladas desse arroz?

Answer 1

1,5 tonelada = 1,5 . 1000 ----- 1500 kg

Arroz (kg)           Preço (R$)
 2,5                       18
          ↓                      ↓
1500                      x

2,5x = 1500 . 18 ------ 2,5x = 27000 ------ x = 27000/2,5 ----- x = 10800

R$ 10 800,00