15 Acres
Step-by-step explanation:
If an acre costs $40,000 and the number of acres sold - which is unknown (so we assign it X)- gives us a total of $60,000, we can therefore create teh following inequality;
40000 * X = 60000
4000x = 60000
X = 60∅∅∅/4∅∅∅
X = 60/4 = 15
= 15 Acres
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