9. Which system can be written from the following paragraph? There were a total of 52 adults (x) and children (y) that went to the fair. Each
adult ticket costs $3 and each child costs $2. The fair collected a total of
$136 in ticket sales. How many of each ticket were sold? *

Step-by-step explanation:

x: adult ticket

y: child ticket

x + y = 52

3x + 2y = 136

-3x - 3y = -156

 3x + 2y = 136

-y = -20

y = 20 child tickets

x + 20 = 52

x = 32 adult tickets

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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step-by-step explanation: