Question

If 60 - y <20, then y could be?

Answer 1

any number 41 and below

Answer 2

First solve the inequality to get y alone:
60 - y < 20
-y < -40 (subtract both sides by 60)
y > 40 (multiply both sides by -1)

So Y could be equal to any number that is above 40 (not including 40 itself)

For example, Y could be equal to 50.