Answer:
2,480,000 = cash collections from customers during 2019
Step-by-step explanation:

40,000 beginning
+2,500,000 sales
- collections
equals 60,000 ending
40,000 + 2,500,000 - collections = 60,000
40,000 + 2,500,000 - 60,000 = colelctions
2,480,000 = cash collections from customers during 2019