X 0 1 2 3 4 y ०० 12 16 20 24
1 answer:
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Answer: 84 tickets
Step-by-step explanation:
We are told the ratio of the number of tickets Mark collected to the number of tickets Julia collected is 4:3
(1)
In addition, we are told Julia collected 36 tickets:
(2)
Substituting (2) in (1):
(3)
Isolating :
(4)
Adding Mark's tickets to Julia's:
Therefore, both collected 84 tickets.