SOLUTION: An exam worth 145 points contains 50 questions.Some of the questions are worth two points and some are worth five points. How many two point questions are on the test? How many fiv
Algebra.Com
Question 1101985: An exam worth 145 points contains 50 questions.Some of the questions are worth two points and some are worth five points. How many two point questions are on the test? How many five point questions are on the test? Write a linear system of equations that can be used to solve this problem. Solve
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x+y=50
x=50-y
2*x+5*y=145
2*(50-y)+5*y=145
solve for y
100-2y+5y=145
3y=45
y=15
x=50-15
x=35
check
2*35+5*15=145
70+75=145
145=145
ok
RELATED QUESTIONS
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)
An exam worth 145 points contains 50 questions. Some of the questions are worth two... (answered by Boreal)
can you please help me with this word problem please having trouble with coming up with... (answered by solver91311)
I need help setting up the following word problem with a system of equations that can be... (answered by ewatrrr)
An Algebra I test contains 40 questions. Some of the questions are worth 4 points each,... (answered by ewatrrr)
An exam worth 100 points contains 30 questions. Multiple choice questions are worth 2... (answered by jim_thompson5910)
An exam worth 100 points contains 30 questions. Multiple choice questions are worth 2... (answered by ewatrrr)
Mrs. Anderson gave an exam to her math class, the exam was worth 225 points, and it... (answered by Boreal)