Tickets to the zoo cost $14 for adults and $10 for children. A group of 12 people went to the zoo, and the tickets cost $140. The system of equations models this situation, where x is the number of adults and y is the number of children.

http://static.k12.com/bank_packages/files/media/mathml_5045d839d415a25475490d8cbd1fd6eaf7b698d5_1.gif

How many adults and how many children were in the group?

A.
5 adults and 7 children

B.
6 adults and 6 children

C.
7 adults and 5 children

D.
8 adults and 4 children

Question

Tickets to the zoo cost $14 for adults and $10 for children. A group of 12 people went to the zoo, and the tickets cost $140. The system of equations models this situation, where x is the number of adults and y is the number of children.
 
 http://static.k12.com/bank_packages/files/media/mathml_5045d839d415a25475490d8cbd1fd6eaf7b698d5_1.gif
 
How many adults and how many children were in the group?
 
 A.
5 adults and 7 children
 
 B.
6 adults and 6 children
 
 C.
7 adults and 5 children
 
 D.
8 adults and 4 children

anonymous · Answer

Plz help

anonymous · Answer

5 adults and 7 children  @TeenWolfGirl

anonymous · Answer

explain the answer don't just tell me plz

anonymous · Answer

Ok

anonymous · Answer

x+y = 12 ----> x = 12 - y
14x + 10y = 144 --> using x = 12 -y 
then you get
14(12-y) + 10y = 140
168 -14y +10y = 140
168 - 140 = 14y -10y
28 = 4y
y = 7
Answer is A

anonymous · Answer

ok thx