Mathematics, 13.07.2020 20:01, aubreywolfe2584

Visitors to a cinema are either children, adults or pensioners. The ratio for children to adult viewers 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 for children to adult view...