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Scorpion4ik [409]
3 years ago
7

Tanya bought three adult tickets and one children's ticket to a movie for 24.60 Li bought five adult tickets and four children's

tickets for 50.10 . Find the cost of one adult ticket and the cost of one children's ticket.
Mathematics
1 answer:
Arte-miy333 [17]3 years ago
3 0

Answer:

adult tickets  6.9

children tickets  3.9

Step-by-step explanation:

3x + y = 24.60    L1

5x + 4y = 50.10  L2

5L1 - 3L2

15x +  5y = 123

-15x - 12y = -150.3

-7y = -27,3

y = -27,3/-7

y = 3.9

3x + y = 24.60

3x + 3.9 = 24.60

3x = 24.60 - 3.9

3x = 20.7

x = 20.7 / 3

x = 6.9

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