Question: Jack knows that adding a special grain supplement to his cows will produce more milk according to the following schedule: 1/3 2/5 3/7 4/8 5/8.65

Jack knows that adding a special grain supplement to his cows will produce more milk according to the following schedule: 1/3 2/5 3/7 4/8 5/8.65 6/8.75; where the first number reports the total number of pounds of grain supplement, and the second number reports the total amount of milk produced. For example, 3/7 means that if the cow is fed 3 pounds of grain supplement, the cow will produce 7 units of milk. How many pounds of grain supplement should Jack feed the cows if the farm receives $0.50 per unit of milk and the price of grain supplement is $0.30 per pound?

5 pounds
4 pounds
2 pounds
6 pounds
3 pounds

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