Page 155 - Calculating Agriculture Cover 20191124 STUDENT - A

CH 14] Calculating Agriculture 14-5

2. At the upper left-hand corner of the square, write concentrate and its protein content
(36); at the lower left-hand corner, write corn and its protein content (9).

3. Subtract diagonally across the square (the smaller number from the larger number),
and write the difference at the corners of the right-hand side (36 – 16 = 20; 16 – 9 = 7).
The number at the upper right-hand corner gives the parts of concentrate by weight,
and the number at the lower right-hand corner gives the parts of corn by weight to
make a ration with 16 % protein.

14

4. To determine what percent of the ration would be corn, divide the parts of corn by the
total parts; (20 ÷ 27) x 100% = 74% corn. The remainder, 26 %, would be the amount of
concentrate supplement. The 26% can be calculated as ([ 7 parts ÷ 27 parts ] x 100% =)
26% or total parts % (100%) minus parts concentrate % (74%) which equals 26%.
26% = 100% − 74%

or

7 parts
——— X 100% = 26%
27 parts

5. From the problem we know that the poultryman has 200 pounds of corn. The 200
pounds will be 74% of the feed. The total feed weight will then be:

Total feed weight = Weight of Grain ÷ grain parts %
Total feed weight = 200# ÷ 74%
= 200# ÷ 0.74
Total feed weight = 270.27 #
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