Because Philip is conducting a survey that pertains to the weight of the cows, he needs statistics that directly relate to weight.
The cows being overweight doesn't give Philip concrete information on the weight of the cows, as it doesn't give the amount of pounds a cow weighs. Average age has nothing to do with weight, and normal body weight doesn't give concrete information on weight.
The answer is "<span>What is the weight of each cow on the farm?".</span>
Answer:

Step-by-step explanation:
step 1
Find the area of the garden space
First convert mixed number to an improper fraction


step 2
Find how much more land Farmer Jack needs to plant the rest of his corn

Answer:
620
Step-by-step explanation:
9.87 is about 10 and 0.509 is about 0.5
(31 * 10) / 0.5 = about 620
The answer would be 0.1215
I'd suggest using a calculator!<span />