First, you have to make it into a mixed number : - 7 7/12. Since -7 7/12 can't be simplified anymore, it's the final answer
Im leaning towards letter (B.)
If not, tell me please :)
Girls;Total number of girls who tried out = 30
Number of girls who got selected = 12
Ratio of girls on team to girls who tried out =

= 2 : 5
Boys;Total number of boys who tried out = 40
Number of boys who got selected = 16
Ratio of boys on team to boys who tried out =

= 2 : 5
Hence, the ratios are the same.
Divide both sides by r. Then multiply each side by s.
Your final answer should be r=2(3.14)sh
25 were on the roller coaster.
Multiplication and subtraction