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Mathematics, 15.12.2021 19:40 2018jecr46871

Q4. White shapes and black shapes are used in a game.
Some of the shapes are circles.
All the other shapes are squares.
The ratio of the number of white shapes to the number of black shapes is 3:7
The ratio of the number of white circles to the number of white squares is 4:5
The ratio of the number of black circles to the number of black squares is 2:5
Work out what fraction of all the shapes are circles.

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Q4. White shapes and black shapes are used in a game.
Some of the shapes are circles.
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