Review Question #7 - Help Needed!

label Mathematics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Mar 3rd, 2015

Linear equations! Set a to represent the adult price and c to represent the children's price:


3a + 4c = 121 (1)

2a + 3c = 86 (2)

Multiple equation (2) by 3/2:

3a + 4.5c = 129

Subtract equation 1:

0a + 0.5c = 8

c = 16

Now we can substitute that in to find a:

2a + 4*16 = 86

2a = 86-48

a = 19


Hope this helped!


Mar 3rd, 2015

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