Question

If a salesperson places telephone calls to 80 potential customers, speaks with 60% of them, and books appointments with 50% of the customers she speaks with, how many customers does she book?

Answer 1

24

Answer 2

Expanding upon what @kumar2006 has done:
She calls 80 people, and makes talks with 60% of them.
That is 48 people (80 people * 0.60=48).
Then if she books appointments with 50% (half) of them, you get 24 people because
48*0.50=24.
You are just converting percentages into decimals, and then multiplying by those decimals this problem.