Mathematics, 30.11.2020 18:30 adhanom1271

Visitors to a cinema are either children, adults or pensioners the ratio of children to adult visitors is 1 : 2 the ratio of adults to pensioners is 3 : 4 a stratified sample 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 adult visito...