SOLUTION: Your teacher is giving you a test worth 100 points containing 40 questions on the test. There are 2point and 4 point questions. How many of each are there?

Question 162607: Your teacher is giving you a test worth 100 points containing 40 questions on the test. There are 2point and 4 point questions. How many of each are there?
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

Then, ---------------------------------------> EQN 1
Also, -----------------------------------------> EQN 2
In EQn 2, we get ----------------------------------> EQN 3
Subst. EQN 3 in EQN 1:

for 4pts
In EQN 3,
for 2pts
In doubt? Go back EQN 1:

Thank you,
Jojo
RELATED QUESTIONS
Your teacher is giving you a test worth 100 points and containing 40 questions. There are (answered by Earlsdon)
Your teacher is giving you a test worth 100 points and containing 40 questions. There are (answered by ankor@dixie-net.com)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by longjonsilver)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by ankor@dixie-net.com)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by calebz423)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by Theo)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by Boreal)
your teacher is giving you a test worth 100 points containing 40 questions. there are... (answered by kev82)
Your teacher is giving you a test worth 100 points containing 40 questions. There are... (answered by sdmmadam@yahoo.com)