During the rapid diagnostic test coronavirus among some people in an urban area, 900 of them were found negative result and it was 3/4 of number of tested people. Rest of them were found suspected of COVID-19 and throat swab was tested. From the tested swab, 3/20 of them were found infected.
a. Find the tested number of people
Answers & Comments
Step-by-step explanation:
[tex]900 \times \frac{3}{4} = x [/tex]
[tex]225 \times 3 = 675[/tex]
675 people were tested