SOLUTION: Mrs. Anderson gave an exam to her math class, the exam was worth 225 points, and it contained 50 questions. Some of the questions were worth 3 points, and some questions were worth
Algebra.Com
Question 1017393: Mrs. Anderson gave an exam to her math class, the exam was worth 225 points, and it contained 50 questions. Some of the questions were worth 3 points, and some questions were worth 8 points. How many of each question were on the exam?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x=3 point questions
y=8 point questions
x+y=50
3x+8y=225
----------
multiply the top by -3
-3x-3y= -150
3x+8y=225
5y=75
y=15
x=35
105 points from x
120 points from y
They add to 225.
RELATED QUESTIONS
Mrs. camillo gave 7 points of extra credit to her 7th-grade math class on their last... (answered by rfer)
An exam worth 145 points contains 50 questions. Some of the questions are worth two... (answered by ikleyn)
An exam worth 145 points contains 50 questions. Some of the questions are worth two... (answered by macston)
A history exam included multiple choice questions that were worth 4 points each and... (answered by math-vortex)
I need help setting up the following word problem with a system of equations that can be... (answered by ewatrrr)
An exam worth 145 points contains 50 questions. Some of the questions are worth two... (answered by Boreal)
An exam worth 145 points contains 50 questions.Some of the questions are worth two points (answered by richwmiller)
A math teacher gave a class two exams. There was 39% of the class who passed both exams... (answered by jorel1380)
can you please help me with this word problem please having trouble with coming up with... (answered by solver91311)