a studernt has pased 60 percent of 20 quizzes he has written so far successfully. if the student 50 quizzes during the year, and
passes 80 percent of the remaning quizzes successfully what is the precent of all the successful quizzess for the entire year
1 answer:
Answer:
72%
Step-by-step explanation:
There are a total of 50 quizzes in the year
From the first 20, the student passes 60%. This makes a total of

12 passes
Out of the remaining 30 quizzes the student passes in 80% of them. This makes a total of

24 passes
Adding the two values
12 + 24 = 36
The student passes 36 quizzes out of 50.
We convert this to a percentage
%
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