Question

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

Answer 1

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.

Answer 2

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!