Ms. Blackwell gives an exam to two classes. The mean of the scores of the students in the morning class is 84, and the afternoon class's mean score is 70. The ratio of the number of students in the morning class to the number of students in the 3 What is the mean of the scores of all the students? 4 afternoon class is (A) 74 (B) 75 (C) 76 (D) 77 (E) 78
Ms. Blackwell gives an exam to two classes. The mean of the scores of the students in the morning class is 84, and the afternoon class's mean score is 70. The ratio of the number of students in the morning class to the number of students in the 3 What is the mean of the scores of all the students? 4 afternoon class is (A) 74 (B) 75 (C) 76 (D) 77 (E) 78
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
Please reference attachment. See image below for more information.
Transcribed Image Text:Ms. Blackwell gives an exam to two classes. The mean of the scores of the students in the morning class is 84, and the
afternoon class's mean score is 70. The ratio of the number of students in the morning class to the number of students in the
3
What is the mean of the scores of all the students?
4
afternoon class is
(A) 74
(B) 75
(C) 76
(D) 77
(E) 78
Expert Solution
Step 1
Mean of the scores of the students in morning class is 84.
That is ......... (1)
Mean of the scores of the students in afternoon class is 70.
That is ......... (2)
The ratio of the number of students in morning class to the number of students in afternoon class is .
Let the number of students in morning class be and number of students in afternoon class be .
Then the total number of students is .
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
