Question

Jack purchased a few cereal boxes from the market. The total weight of all the cereal boxes is 16 kg 800 g. If the weight of each cereal box is 420 g, then find the number of cereal boxes bought.

Answer 1

Given:
Total weight of all the cereal boxes
= 16 kg 800 g
Weight of one cereal box = 420 g

$\text{Number of cereal boxes bought}$
$=\frac{\text{Total weight of all the cereal boxes}}{\text{Weight of one cereal box}}$
$=\frac{16\text{kg}800\text{g}}{420\text{g}}$

Let us convert 16 kg 800 g to g before performing the division.

We know:
1 kg = 1000 g
$\therefore 16\text{kg}=16\times 1000=16000\text{g}$

$\therefore$ 16 kg 800 g = 16000 g + 800 g
= 16800 g
$\therefore \text{Number of cereal boxes}=\frac{16800}{420}$


Thus, 40 cereal boxes were bought.