Final answer:
Lilian's claim that 25% of a number will always be less than 75% of any other number can be supported by the inequality 0.25x < 0.75y. However, to show that Lilian is incorrect, we can provide the inequality 0.25x > 0.75y.
Step-by-step explanation:
Lilian's claim can be supported by the inequality 0.25x < 0.75y. This means that 25% of a number x will always be less than 75% of any other number y.
However, to show that Lilian is incorrect, we can provide the inequality 0.25x > 0.75y. This means that 25% of a number x can be greater than 75% of another number y.