I'll give you a question, please answer with step-by-step reasoning process.
April went to a concert that has two bands. 2/3 of the audience was there for the second band and 1/3 was there for the first band. 50% of the audience there for the second band is under the age of 30. Of this group, 60% are women and there are 20 men. How many people are at the concert?

150
Of the under - 30s there for the second band, 40% are men because 100 - 60 = 40.

There are fifty under - 30s there for the second band because 20 /.

4 = 50.

There are 100 people there to see the second band because 50 /.

5 = 100.

There are 150 people at the concert because 100 / (2 / 3) = 150.

.

So, the answer is 150