Can you pass this Mathematics quiz?
Erin reads an average of 20 books per year. She read 23, 17, 20, and 19 books in four different years. How many books did Erin read in the 5th year to make it an average of exactly 20.0 per year?
17
20
21
19
Hot Quizzes Trending Now
History
2.52 M Players
What famous audio device was built in 1978?
1990s
3.78 M Players
Who was the best-selling musical artist in the 90s?