Question

In a survey, 100 people are asked if they are using power toothbrushes and 38 say yes. What fraction of people uses power toothbrushes? Use the simplest fraction.

Answer 1

The fraction of people who use power toothbrushes, based on the survey of 100 people where 38 said yes, is 19/50. This is the simplest form, arrived at by dividing the numerator and denominator by their greatest common divisor, which is 2.

Step-by-step explanation:

To find what fraction of people uses power toothbrushes, you can set up a fraction with the number of people who said 'yes' as the numerator and the total number of people surveyed as the denominator.

In this case, 38 out of 100 people said they use power toothbrushes. To express this as the simplest fraction, you would divide both the numerator and the denominator by their greatest common divisor, which is 2 in this situation. The simplest fraction form would be 19/50.

Here is the calculation step-by-step:

1. Write down the fraction: 38/100.
2. Divide both numerator and denominator by 2: (38 ÷ 2) / (100 ÷ 2) = 19/50.

This means that the fraction of people that uses power toothbrushes from the survey is 19/50.