Denise is the fastest runner. 40 divided by 6 is 6.666 repeating 30 divided by 5 is 6 and 20 divided by 4 is 5 therefore denise is fastest
This is a proportions question
12 42
------ = -------
70 ?
Cross multiply
70x42=2940
12x?=2940
294/12=245
42 cows can produce 245 gallons of milk.
So the answer is B.
Hope I helped!
Manipulating the left side of the equation, we obtain:

Using that

:
Answer:
What does this even say maybe I can try and help.