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Answer:
Step-by-step explanation:
Let x represent the number of $20 tickets and y represent the number of $30 tickets.
a) the equation that states that the sum of the tickets sold is 1800 is
x + y = 1800
b) the amount of money received from the sale of $20 tickets is 20x
c) the amount of money received from the sale of $30 tickets is 30y
d) an equation that states that the total amount received from the sale is $42,000 is
20x + 30y = 42000 - - - - - - - - - -1
e) we would substitute x = 1800 - y into equation 1, it becomes
20(1800 - y) + 30y = 42000
36000 - 20y + 30y = 42000
- 20y + 30y = 42000 - 36000
10y = 6000
y = 6000/10
y = 600
x = 1800 - y = 1800 - 600
x = 1200
a. equation is 20x + 30y = 4200
b. the sale of $20 tickets is $36,000.
c. the sale of $30 tickets is $54,000.
d. equation is 20x + 30y = 4200
e. 600 tickets are of $30 and 1200 tickets are of $20.
Given
$42,000 from the sale of 1800 tickets.
The promoter charges $20 for some tickets and $30 for the others.
Linear system
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
How to find x and y?
Let x represent the number of $20 tickets and y represent the number of $30 tickets. $42,000 from the sale of 1800 tickets. then the equation will be
20x + 30y = 4200
a. equation is 20x + 30y = 4200
b. the sale of $20 tickets will be
20 x 1800 = 36,000
the sale of $20 tickets is $36,000.
c. the sale of $30 tickets will be
30 x 1800 = 54,000
the sale of $30 tickets is $54,000.
d. equation is 20x + 30y = 4200
e. 600 tickets are of $30 and 1200 tickets are of $20.
More about the linear system link is given below.
https://brainly.com/question/20379472
