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4 votes
Theater tickets sold for $7.50 on

the main floor and $, in the
balcony. The total revenue was
$3250, and there were 100 more
main-floor tickets sold than
balcony tickets. Find the number
of each type of ticket sold.
(in Substitution method)
Cant figure the work out :/

User Peiwen
by
8.3k points

1 Answer

5 votes
Let x = number of main floor tickets sold
Let y = number of balcony tickets sold

x + y = total tickets sold
7.50x + 5y = total revenue

x + y = 250
7.50x + 5y = 3250

Substitute x + y = 250 into 7.50x + 5y = 3250
7.50(250) + 5y = 3250
1875 + 5y = 3250

Subtract 1875 from both sides
5y = 1375

Divide both sides by 5
y = 275

Substitute y = 275 into x + y = 250
x + 275 = 250
x = -25

Since x cannot be negative, the equation is not valid. Therefore, the number of tickets sold cannot be determined.

Hope this helped!!! :)
User Silverkid
by
7.8k points