Posted by **Zach** on Thursday, November 5, 2009 at 11:04pm.

Mary's class took two tests last week. 80% of the class passed the math test, 90% of the class passed the English test, and 72% of the class passed both. What is the probablility that a randomly selected student in Mary's class failed both tests? Express your answer as a percent rounded to the nearest tenth of a percent?

Thanks

-Zach

## Answer this Question

## Related Questions

- Math - There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class ...
- Math - There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class ...
- Help - Math - A teacher gave his class two quizzes; 80% of the class passed the ...
- math - A professor knows that in her class 37% of the students have passed an ...
- statistics - In class of 125 students, 70 students passed in Math, 56 students ...
- statistics - A professor knows that in her class 37% of the students have passed...
- set (math) - A class of 47 students took examination in algebra and geometry. If...
- fractions - In Mr. Johanessen's class, 1/4 of the students failed the final exam...
- math - In a class of 60 student,the number of student who passed biology is 6 ...
- math - out of 100 students in a final examination of class 10, 70 passed in ...