Let x be the number of people at University B
x + (x+3.5) = 9.5
2x +3.5 = 9.5
2x = 6
x = 3 million students at University B
x + 3.5 = 3 + 3.5 = 6.5 million students at University A
#3. Plugging the point (3,0) into any of the equations except the third one gives an invalid answer.
The answer is 48.5, did a question similar to this on a quiz and got it right
