Respuesta :
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 =
[tex]\displaystyle\frac{70}{120}\times 100\% = 58.34\%[/tex]
Number of teachers had heart trouble = 40
Percentage of teachers had heart trouble =
[tex]\displaystyle\frac{40}{120}\times 100\% = 33.34\%[/tex]
Number of teachers had both high blood pressure and heart trouble = 20
Percentage of teachers had both high blood pressure and heart trouble =
[tex]\displaystyle\frac{20}{120}\times 100\% = 16.67\%[/tex]
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
= [tex]58.34+33.34-16.67 = 75.01\%[/tex]
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
= [tex]100\% - 75.01\% = 24.99\%[/tex]
