Question

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

Answer 1

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!