ghernadez
09.09.2020 •
Mathematics
in a survey of community 60% people read daily newspaper & 50% people read weekly newspaper & 20% people don't read any type of news paper. If 1500 people read both type of news paper, how many people were surveyed.
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Ответ:
4500
Step-by-step explanation:
60% Daily
50% Weekly
20% None
130% total → 30% both Daily and Weekly
30% of total people = 1500
0.30x = 1500
÷0.30 ÷0.30
x = 4500
Ответ:
150|300
250|500
360|720
480|960
The answer is B.