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Question

A ball and a box weigh 900 grams.
Two identical balls and the same box weigh 1.35kg.
What is the mass of the box?

How do I work this out?
7 years ago

Answers

Steve
1.35kg = 1350g = 900+450g
2 balls and a box weight 450g more than one ball and the box.
So, a ball weighs 450g
Since a ball and a box weigh 900g, the box also weighs 450g.
7 years ago

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