a. The percentage of the families that are not homeowners is 52%.
b. The percentage of the families have no car or one car is 26%.
The percentage of a number is when the fraction of a number is multiplied by 100. Percentages are represented with this sign '%'.
Percentage of the families that are not homeowners = (sum of families that have no car, one car, two cars or more cars / total number of families surveyed) x 100
[tex]\frac{45 + 85}{250}[/tex] × 100
[tex]\frac{130}{250}[/tex] × 100 = 52%
Percentage of families that have no car or one car = ( sum of homeowners and families that are not homeowners) x 100
[tex]\frac{20 + 45}{250}[/tex] x 100
[tex]\frac{65}{250}[/tex] x 100 = 26%
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