In a certain examination the average grade of all students in class A is 68.4 and students in class B is 71.2. If the average of both classes combined is 70, find the ratio of the number of students in class A to the number of students in class B.
In a certain examination the average grade of all students in class A is 68.4 and students in class B is 71.2. If the average of both classes combined is 70, find the ratio of the number of students in class A to the number of students in class B.
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.2: Proportions
Problem 3ST
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