At the movie theatre, child admission is $5.80 and adult admission is $8.90. On Thursday, 125 tickets were sold for a total sales of $954.40. How many adult tickets were sold that day?

Step-by-step explanation:

let the no of children be x

cost for children = 5.8

total cost for children = 5.8x

let the no of adults be y

cost for adults = 8.9

total cost for adults = 8.9x

total tickets sold = total number of people

125 = x+y

x=125-y

total cost = total cost for children + total cost for adults

954.4 = 5.8x + 8.9y

substitute the value of x

954.4 = 5.8 (125 - y) + 8.9y

954.4 = 725 - 5.8y + 8.9y

954.4 - 725 = 3.1y

229.4 = 3.1y

y = 229.4 / 3.1 = 74

therefore total no of adults = 74