Question

Mrs.Morales wrote a test with 15 questions covering spelling and vocabulary.Spelling questions(x)are worth 5 points and vocabulary questions (y) are worth 10 points. The maximum number of points possible on the test is 100.

Answer 1

X + y = 15.......x = 15 - y
5x + 10y = 100

5(15 - y) + 10y = 100
75 - 5y + 10y = 100
-5y + 10y = 100 - 75
5y = 25
y = 25/5
y = 5.....there were 5 vocabulary questions

x + y = 15
x + 5 = 15
x = 15 - 5
x = 10......there were 10 spelling questions

Answer 2

X=10 y=5 would be the answers I'm not sure on the equation