A and B are sets of real numbers defined as follows. W

A={w | w<3}

B={w | w26)

Write A U(union) B and A n(intersection) B using interval notation.

If the set is empty, write Ø.

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.