SOLUTION: A JAZZ CONCERT BROUGHT IN $158,000 ON THE SALE OF 7,800 TICKETS. IF THE TICKETS SOLD FOR $15 AND $25 EACH, HOW MAY OF EACH TYPE OF TICKET WERE SOLD?

Question 330380: A JAZZ CONCERT BROUGHT IN $158,000 ON THE SALE OF 7,800 TICKETS. IF THE TICKETS SOLD FOR $15 AND $25 EACH, HOW MAY OF EACH TYPE OF TICKET WERE SOLD?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the number of $15 tickets, B the number of $25 tickets.
1.
2.
From eq. 1,

Substitute in eq. 2,

Then from eq. 1,

.
.
.
3700 $15 tickets and 4100 $25 tickets were sold.
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