# Tickets 4

Stacey is selling tickets to the school play. The tickets are \$7 for adults and \$5 for children. She sells twice as many adult tickets as children's tickets and brings in a total of \$342. How many of each kind of ticket did she sell?

Correct result:

a =  18
b =  36

#### Solution:

7a + 6b = 342
b = 2a

7•a + 6•b = 342
b = 2•a

7a+6b = 342
2a-b = 0

a = 18
b = 36

Our linear equations calculator calculates it.

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