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Re: In a company survey, 1,000 employees were each asked whether they take
[#permalink]
18 Jan 2024, 23:25
Since this involves 2 overlapping sets, the equation can be interpreted as:
(# of employees who take tea) + (# of employees who take coffee) - (# of employees who take both) + (# of employees who take neither) = 1000
(0.60 * 1000) + (0.62 * 1000) - (0.35 * 1000) + n = 1000
600 + 620 - 350 + n = 1000
n = 130