The ratio of boys to girls in the 9th grade is 5 to 6. There are 312 girls. Set up a proportion to model this information.
A. 5/312 = 6/b b. 5/b = 312/6 c. 5/6 = b/312 d. 5/6 = 312/b

 c.  5/6 = b/312

Step-by-step explanation:

5/6 = b/312

To solve, divide 312/6 = 52

52 × 5 = 260

5/6 = 260/312

check:  260/312  = 0.833...   5/6 = 0.833...

True. The ratio is correct

the answer should be:

a. 3, 4, and 6

b. 18, 24, and 36

c. 4.8, 6.4, and 9.6

hope i

-lavira : )

your answer is  

a.

5

step-by-step explanation: