Mathematics, 13.07.2020 14:01 reggie36151
Visitors to a cinema are either children, adults or pensioners. The ratio of children to adults is 1 : 2 The ratio of adults to pensioners is 3 : 4 A stratified example of 85 is to be taken from the cinema visitors. How many pensioners should be in the sample?
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Visitors to a cinema are either children, adults or pensioners. The ratio of children to adults is 1...
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