Answer:
225
Explanation:
You want to know the number of hamburgers sold if the total of hamburgers and cheeseburgers was 524, and there were 74 more cheeseburgers sold.
Setup
Let h represent the number of hamburgers sold. Then (h+74) is the number of cheeseburgers, and the total is ...
h +(h +74) = 524
Solution
Simplifying gives ...
2h +74 = 524
2h = 450 . . . . . . . subtract 74
h = 225 . . . . . . . divide by 2
225 hamburgers were sold on Monday.
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