There are two universities, A and B, in a city. Tuition rises at University A and, as a result, the demand for attending University B rises. It follows that educational services at the two universities are

Substitutes

Explanation:

The education services at the two universities are substitutes to each other. The cross price elasticity of substitute goods is positive which indicates that as the price of one good increases then as a result the demand for other good increases and if the price of one good decreases then as a result the demand for other good decreases.

Now, if there is an increase in the tuition fees at University A, hence, this will increase the price of educational services at University A. Therefore, this will lead to an increase in the demand for educational services at University B.