Answer:
The greatest number of adults who could have purchased tickets is 105.
Explanation:
Let the number of amount of adult tickets sold out be x
Therefore ,
the number of amount of child tickets sold out be 3 × x
Total amount earned = 7 × x + 4 × 3 × x
= 19 × x
According to the question ,
19 × x ≤ 2000
⇒ x ≤ 105
Hence,
The greatest number of adults who could have purchased tickets is 105.