450 people use TIDE to wash clothes and the other 600 uses bounce dryer sheets. If 150 people use tide and bounce then how many use either tide or bounce?

Let A represent the set of people using TIDE.

n(A) = 450.

Let B represent the set of people using bounce dryer sheets.

n(B) = 600.

Then you are told that n(A\ \cap\ B) = 150

And are asked what is n(A\ \cup\ B)

Can you get this?