A box contains 1000 biscuits each weighing 5 grams. What is the weight of all the biscuits in the box in both grams and kilograms (kg)?

The correct option is A 5000 grams , 5 kg
Number of biscuits in box = 1000
Weight of one biscuit = 5 grams
Weight of 1000 biscuits
$=\text{(Weight of one biscuit)}\times \text{(number of biscuits in box)}$
$=1000\times 5$
= 5000 grams
$\because$ 1kg = 1000 grams
$\therefore$ weight in kg $=\frac{5000}{1000}$
= 5 kg