Question

Max has 15 packets of flour in his store, each weighing 1 kg 400 g. Find the total weight of the flour.

• A. 25 kg
• B. 20 kg
• C. 22 kg
• D. 21 kg

Answer 1

The correct option is D 21 kg

Weight of 1 packet of flour = 1 kg 400 g

$\therefore$ Weight of 15 packets
= 15$\times$ (1 kg 400 g)


$\therefore$ The total weight is 15 kg 6000 g. Let's simplify this further.

We know:
1 kg = 1000 g
or 1000 g = 1 kg

$\therefore 1\text{g}=\frac{1}{1000}\text{kg}$

$\therefore 6000\text{g}=\frac{6000}{1000}=6\text{kg}$

$\therefore$ Total weight
$=15\text{kg}6000\text{g}$
$=15\text{kg}+6\text{kg}(\because 6000\text{g}=6\text{kg})$
$=21\text{kg}$