Final answer:
To find the equivalent rate for 40 chickens from a rate for 200 chickens, Ang would use a scale factor of 0.2, multiplying the initial feed quantity by 0.2 to get the feed amount for the smaller number of chickens.
Step-by-step explanation:
Understanding Scale Factors in Equivalent Rates
If Ang determines the daily rate of pounds of chicken feed for 200 chickens, to find an equivalent rate for 40 chickens, she would use a scale factor. A scale factor is the ratio of the second number in a rate to the first number. Since the original rate is for 200 chickens and Ang wants to find the rate for 40 chickens, we need to compute the scale factor.
First, we divide the number of chickens in the desired rate by the number of chickens in the original rate:
40 chickens ÷ 200 chickens = 0.2
Therefore, the scale factor Ang should use is 0.2. To find the equivalent amount of feed for 40 chickens, she would multiply the original amount of feed used for 200 chickens by 0.2.