Finite Math

posted by .

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability that a student selected at random previously took pre-calculus and did not receive an A in the calculus class.

  • Finite Math -

    100 students
    50 had pre calc - 15 got A, 35 not A

    50 no pre cacl - 10 got A, 40 not A

    sure looks like 35 of the hundred :)

  • Finite Math -

    Thanks Damon! :-)

  • Finite Math -

    You are welcome :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. percents

    how do you find the percent of how many students in the class for example there are 2000 students in a class and 20 percent of them speak french...how do i solve this problem?
  2. math

    in a class of 35 students 7 students get a b what percent of the class received a b
  3. basic statistics for the behavioral sciences

    there are 80 students enrolled in statistics. (a)you and 11 other earned the same score. what percent of the class received your score?
  4. Math

    There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test?
  5. MATH

    Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85 percent got a sticker. What percent of the students (rounded to the nearest full percentage number) received …
  6. math

    Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85 percent got a sticker. What percent of the students (rounded to the nearest full percentage number) received …
  7. math

    Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85 percent got a sticker. What percent of the students (rounded to the nearest full percentage number) received …
  8. math

    In a local school 34 students are enrolled in a math class, 85 are enrolled in an english class, 58 are enrolled in an art class, and 54 are enrolled in a history class. Construct a pie chart with this data. What is the central angle …
  9. 7th grade math

    A biology class has 28 students. Four of the students transferred out to take chemistry. Find the percent of change in the number of students in the biology class. I got 86 percent change is that right?
  10. Math

    Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85 percent go a sticker. What percent of the students ( rounded to the nearest full percentage number) received …

More Similar Questions