8.1.9 Going Solo
Activity: Going Solo
(a) A radio program reported the following:
“Our ‘Going Solo’ survey of 4,000 single people found that only 1 in 5 is happy on their own.”
Write “1 in 5” as a fraction, a decimal, and a percentage. Which form do you think is easiest to understand?
Which numbers create the fraction? How does this fraction convert to a percent? How does it convert to a decimal?
(a) “1 in 5” can be written as , or , as well as .
The report could have said “one-fifth” or “20%” of people in the survey, but “1 in 5” makes the proportion easy to visualize for people not comfortable with fractions and percentages. Which form is easiest to understand depends on your way of thinking.
Remember, all of these express the same number, although “0.2 of the people” would probably not be used, because it’s much harder to visualize and put in context. In part (b) you will determine how many people this is.
(b) How many of the 4,000 “Going Solo” survey participants seem to be content with being single?
You know that it’s one-fifth of the group, and remember, “of” means “multiply.”