SOLUTION: On an algebra test, the highest grade was 42 points higher than the lowest grade. The sum of two grades was 138. Find the lowest grade

Algebra ->  Rectangles -> SOLUTION: On an algebra test, the highest grade was 42 points higher than the lowest grade. The sum of two grades was 138. Find the lowest grade      Log On


   

Question 774161: On an algebra test, the highest grade was 42 points higher than the lowest grade. The sum of two grades was 138. Find the lowest grade
Answer by arKed(27) About Me  (Show Source):
You can put this solution on YOUR website!
N1 + N2 = 138
N2 = 42 + N1
42 + N1 + N1 = 138
42 + 2N1 = 138
2N1 / 2 = (138 -42) / 2
N1 = 48..ANS.
N2 = 42 + N1
N2 = 42 + 48
N2 = 90..ANS.
N1 + N2 = 138
48 + 90 = 138
138 + 138