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cluponka [151]
3 years ago
13

A student has passed 60 percent of the 20 quizzes he has written so far successfully. If the student writes 50 quizzes during th

e year and passes 80 percent of the remaining quizzes successfully, what is the percent of all successful quizzes for the entire year?
PLS HELP QUICK
Mathematics
1 answer:
max2010maxim [7]3 years ago
5 0
We can first find the total number of quizzes and the number he got them right:

Total number: 20+80=100

Total correct answer:
20×60%+50×80%
=52

We can then find the percentage:
\frac{52}{100}  \times 100 \\  = 52

Therefore the answer is 52%.

Hope it helps!
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