Answer: 0.535kilogram
Explanation:
From the question, we are informed that Celeste ordered a pack with 7 pens and 1 stapler and that each pen weighed 7 grams while the stapler weighed 486 grams.
The weight of the order will then be:
= 7 pens + 1 stapler
= 7(7 grams) + 1(486 grams)
= 49 grams + 486 grams
= 535 grams
To convert grams to kilogram,, we have to divide by 1000. This will be:
= 535/1000
= 0.535kilograms
The order weigh 0.535kilograms