Answer:
A = $11; C = $7 tickets
Step-by-step explanation:
Using the given info, we can create a system of equations to find the price of adult and children tickets.
Thus, we have 5A + 7C = 104 and 7A + 3C = 98
The easiest method to solve would be elimination:
Answer:
Step-by-step explanation:
The sales on the two days can be expressed using equations that can be solved for ticket prices.
Let x and y represent the prices of adult and children's tickets, respectively. Then the sales revenue for the two days can be expressed in the equations ...
One of the easiest solution methods is to use a graphing calculator. The first attachment shows the prices are $11 for an adult ticket; $7 for children tickets.
Using the matrix functions of a calculator, the augmented matrix of the equation coefficients can be reduced to row-echelon form. This, too, shows the solution to be (adult price, children price) = ($11, $7). See the second attachment. (The solution is the right-most column of the reduced matrix.)
Yet another solution method can use the coefficients from the equations written in general form:
In this form, we define three products of "cross multiplication":
 Δ1 = (5)(3) -(7)(7) = -34
 Δ2 = (7)(-98) -(3)(-104) = -374
 Δ3 = (-104)(7) -(-98)(5) = -238
Using those, we find the variable values to be ...
 x = Δ2/Δ1 = -374/-34 = 11
 y = Δ3/Δ1 = -238/-34 = 7
(adult price, children price) = ($11, $7)
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You can read more about the cross-multiplication method here:
https://brainly.com/question/26397343
