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mr_godi [17]
3 years ago
14

5x+y=27 y=4x using substitution method

Mathematics
2 answers:
Feliz [49]3 years ago
7 0
Substitute 4x for y, and solve for x;
5x + (4x) = 27
9x = 27
x = 3
Substitute 3 in for x in the first equation and solve for y;
5(3) + y = 27
15 + y = 27
y = 12
Dvinal [7]3 years ago
4 0
 5x + y = 27
substitute: 5x + 4x = 27
combine: 9x = 27
divide (by 9): x = 3
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For the school play, the advance tickets cost 3, while tickets at the door cost 5. Thirty more tickets were sold at door than in
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Answer:

Number of tickets sold in advance = 310

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Step-by-step explanation:

Note: This question is not complete. The complete question is therefore provided before answering the question as follows:

For the school play, the advance tickets cost $3, while tickets at the door cost $5. Thirty more tickets were sold at the door than in advance, and $2630 was collected. How many of each kind of ticket were sold?

The explation of the answer is now given as follows:

Let a represents number of tickets sold in advance. Therefore, we have:

a = number of tickets sold in advance at $3 each

a + 30 = number of tickets sold  at the door at $5 each

The total amount collected can be represented by this equation:

3a + 5(a + 30) = 2630

Solving for a, wee have:

3a + 5a + 150 = 2630

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a = 2,480 / 8

a = 310

Therefore, this implies:

Number of tickets sold in advance = 310

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