The average (arithmetic mean) of the test scores of a class of "p" students is 70, and the average of the test scores of a class of "n" students is 92. When the scores of both classes are combined the aveage is 86. What is the value of p n?
There was no answer or explaination given for this problem. I would like a step by step explaination if possible so that I can explain this problem to students I sometimes tutor.
Also, it was asked if prime factoring can be used to solve this problem?
The average (arithmetic mean) of the test scores of a class of "p" students is 70, and the average of the test scores of a class of "n" students is 92. When the scores of both classes are combined the aveage is 86. What is the value of p n?
There was no answer or explaination given for this problem. I would like a step by step explaination if possible so that I can explain this problem to students I sometimes tutor.
Also, it was asked if prime factoring can be used to solve this problem?
Thanks for any and all help.
Haven Williams
This is not a difficult problem:
Start from the definition of average and form the equation
Interactive Math Goodies Software
SAT Math Question - No Answer Given
Posted - 04/22/2008 : 11:33:39
n?
