Mathematics, 20.10.2020 01:01, ronnie7898

Visitors to a cinematic are either children, adults or pensioners. Ratio of children to adult visitors is 1:2 Ratio of adults to pensioners is 3:4 A stratified sample of 85 is to be taken from the cinema visitors. How many pensioners should there be in the sample?

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Visitors to a cinematic are either children, adults or pensioners. Ratio of children to adult visito...