Question

in a survey, editors of a magazine asked 200 people whether or not they smoke and whether or not they exercise regularly (more than twice a week). the results are summarized in the table below.

	smoke	do not smoke
do not exercise regularly	54	114

(a) what percentage of the adults do not smoke?

(b) what percentage of the adults exercise regularly?

Explanation:

Step1: Calculate total number of adults

The total number of people surveyed is 200.

Step2: Calculate number of non - smokers

The number of non - smokers is \(28 + 114=142\).

Step3: Calculate percentage of non - smokers

The percentage of non - smokers is \(\frac{142}{200}\times100\% = 71\%\).

Step4: Calculate number of regular exercisers

The number of regular exercisers is \(4 + 28 = 32\).

Step5: Calculate percentage of regular exercisers

The percentage of regular exercisers is \(\frac{32}{200}\times100\%=16\%\).

Answer:

(a) 71%
(b) 16%