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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.

2 Answers

11 votes
Yes it was just so funny that you did it look at the other two different things and that was the one
User Lukas Bach
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5.7k points
11 votes

Answer:

Find the equivalent ratio for the total shapes:

Total Black Shapes : Total White Shapes = 5 : 11

Multiply by 2:

Total Black Shapes: Total White Shapes = 10 : 22

Explanation:

User Unkulunkulu
by
5.1k points