Answer:Percent of the teachers surveyed had neither high blood pressure nor heart trouble = 24.99%
Step-by-step explanation:
We are given the following in the question:
Number of teachers surveyed = 120
Number of teachers had high blood pressure = 70
Percentage of teachers had high blood pressure =
Number of teachers had heart trouble = 40
Percentage of teachers had heart trouble =
Number of teachers had both high blood pressure and heart trouble = 20
Percentage of teachers had both high blood pressure and heart trouble =
Percent of the teachers surveyed had high blood pressure or heart trouble = Percent of teachers had high blood pressure +Percent of teachers had heart trouble - Percent of teachers had both high blood pressure and heart trouble
Percent of the teachers surveyed had neither high blood pressure nor heart trouble
= 100% - Percent of the teachers surveyed had high blood pressure or heart trouble
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