This is hard for me can anyone solve it for me and explain

Answer:
1. 3/4
2. 90
Step-by-step explanation:
1. 3/4 because 15/20 simplifies to 3/4
2. 90 because when you multiply 120 (the number of customers) by 3/4 (the amount he expects to sell per customer), you get 90
the answer is 90
Step-by-step explanation:
3/4 of 120 is 90