y: cost of a children's ticket
x: cost of a adult's ticket
200x+100y=2100
x-y=3
and then just solve it, i think
You can use your calculator to divide it out and find that

or, you can make use of your knowledge of the decimal equivalent if 1/11 (=0.90909...) and multiply that by -8 to get -0.727272... as above.
The answer is 48 because when you split it in half you get 48
5
in a group of 50, 5 people will likely have red hair
Answer:
83%
Step-by-step explanation:
65/78=.83333333333333
0.833333333 turnes into 83% once rounded and multipyled by 100