Survey: On free time 90 students like watching TV, 20 like watching TV but not reading, 80 like reading, 40 do not like watching
1 answer:
Answer:
50 %
Step-by-step explanation:
From the diagram attached,
Percentage of total students that like watching television = [(WnR)/μ]×100......... Equation 1
The number of students that like watching television and reading (WnR) = 70
The total number of students (μ) = 40+20+70+10
The total number of students (μ) = 140
Substitute these values into equation 1
Percentage of total students that like watching television = (70/140)×100
Percentage of total students that like watching television = 1/2(100)
Percentage of total students that like watching television = 50 %
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Step-by-step explanation:
<u>Problem #1:</u>
1. Find the GCF (Greatest Common Factor)
2. Factor out the GCF and simplify.
3. Factor
<u>Which two numbers add up to 7 and multiply to 10?</u>
2 and 5
<u>Rewrite the expression using the above.</u>
4. Done!
<u>Problem #2:</u>
1. Find the GCF (Greatest Common Factor)
2. Factor out the GCF and simplify.
3. Use the perfect square formula.
4. Done!