Lesson: Basic Arithmetic - 20t01

In-Format Fraction Questions, continued

[Page 20 of 24]

And another one. Click on the correct response and then click Continue.

In a survey, 80 percent of the respondents owned a widget. Half of the respondents who did not own a widget did not own a thingamabob either. If five people owned neither a thingamabob nor a widget, how many people were surveyed?
10
25
40
50
80

Countinue

80% of the respondents own a widget, so 20% do not. Half of those 20% do not own a thingamabob either, so 10% own neither a thingamabob nor a widget. Thus 10% of the respondents equals five people, and we can now apply the percent formula:
 
 
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