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Primary 3 | Maths
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Date Posted: 5 years ago
Views: 309
8 small balls (or circles , if you prefer) are balanced by 1 big ball + 2 small balls
Notice that the 2 small balls on the right will be balanced by 2 identical small balls on the left?
8 - 2 = 6
So the remaining 6 small identical balls on the left are balanced by the big ball.
This tells you that weight of 1 big ball = weight of 6 small balls.
Since you already know 1 big ball weighs 240g,
Then 6 small balls weigh 240g.
1 small ball = 240g ÷ 6 = 40g
Notice that the 2 small balls on the right will be balanced by 2 identical small balls on the left?
8 - 2 = 6
So the remaining 6 small identical balls on the left are balanced by the big ball.
This tells you that weight of 1 big ball = weight of 6 small balls.
Since you already know 1 big ball weighs 240g,
Then 6 small balls weigh 240g.
1 small ball = 240g ÷ 6 = 40g
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hope this helps! :>
Date Posted:
5 years ago
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