Homework Help: math

Posted by Vic on Friday, January 6, 2012 at 12:49am.

during two hours at one area high school there are 3 class changes and two class periods. if the time spent in class is six less than six times the time spent changing classes, how long are the classes at this high school?

math - Reiny, Friday, January 6, 2012 at 9:48am
length of class change --- x
length of each class--- y

but y = 6x - 6

3x + 2y = 120
3x + 2(6x-6) = 120
3x + 12x - 12 = 120
15x = 132
x = 8.8
y = 46.8

Answer this Question

Related Questions

math - â€¢You and three (3) of your friends were in the same ...
math - every math class at super fun time high school has 31 students and every ...
english - can you please improve these two sentences. im tryingtosay like the ...
English - I left out two sentences. Thank you. 1) I take the clothes out (and ...
Grades - I need some help on calculating my current high school GPA. So far, I&#...
strayer - You and three (3) of your friends were in the same advance placement ...
statistics - You and three (3) of your friends were in the same advance ...
English - 1. My favorite class is a math class. 2. My favorite class is math ...
Law/421 - Sam is a high school math teacher. And, Becky is a student in his math...
English - 1. He is my old friend. (Can we use this one when one of my friends is...

For Further Reading

First Name:
School Subject:
Answer: