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if 12 cows produce 70 gallons of milk, how many gallons of milk would 42 cows produce?
A. 20
B. 245
C. 512
D. 840

Sagot :

Espeonidn
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!

Answer: 245 gallons

Step-by-step explanation: Set up a ratio,  cows /gallons  =  12/ 70  =  42/ x , then cross multiply to get 12x = 70*42. Divide to get 245 gallons.

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