One morning Kai records the colour of the cars passing his house. He then works out the relative frequency of each colour.
Some of his results are shown in this table.
Colour
Silver
Red
Green
Black
Other
Relative
frequency
0.16
0.10
0.24
0.32
The following morning, Kai is going to record the colour of the first 200 cars to pass his house,
Work out an estimate for the total number of cars, coloured silver or red, that he should expect to
see.
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