Answer: 60 is the net change.
Step-by-step explanation:
(1) Monday's $2,000 with a 10% decrease in sales would be $200. 2,000 - 200 = $1,800
(2) If sales further decreased by 20% on Wednesday, then it would be $360. 1,800 - 360 = $1,440
(3) If sales increased by 25% from Monday's original total number of sales (2,000) that will be a $500 add-on to $1,440. 1,440 + 500 = $1,940
(4) So now you just subtract the final number of sales to the original number of sales. $2000 - $1,940 = 60