How much revenue comes from adult tickets?

Question

GCCP is selling tickets to the talent show. They are selling two types of tickets, adult for $5 and children for $2.50. So far 548 tickets have been sold and they have made $2460.

Answer 1

X = # of adult tickets

Y = # of children tickets

 

X + Y = 548

 

5X + 2.5Y = 2460

 

use elimination process to get rid of Y value

 

multiply X+Y=548 by -2.5, so -2.5X - 2.5Y = -1370

 

-2.5X - 2.5Y = -1370

   5X + 2.5Y = 2460

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2.5X              = 1090

 

X =   436

 

revenue is 436 * 5 = $2180