Waec Model Questions Vol1 2023 Agricultural Science Question 42

Practice objective / multiple choice question 42 from the 2023 Waec Model Questions Vol1 Agricultural Science examination.

Waec Model Questions Vol1 2023 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 42 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • AGRICULTURAL_SCIENCE • objective

A farmer formulates a 100 kg concentrate feed using three ingredients. Ingredient X contains 20 % protein, 12 MJ kg⁻¹ energy and costs $0.30 kg⁻¹. Ingredient Y contains 12 % protein, 10 MJ kg⁻¹ energy and costs $0.25 kg⁻¹. Ingredient Z contains 8 % protein, 9 MJ kg⁻¹ energy and costs $0.15 kg⁻¹. The feed must contain at least 15 % protein and at least 11 MJ kg⁻¹ energy. Determine the least‑cost combination of the three ingredients (kg of each) that meets the specifications.

Answer Options

A. X = 50.00 kg, Y = 25.00 kg, Z = 25.00 kg (cost $22.50)
B. X = 60.00 kg, Y = 20.00 kg, Z = 20.00 kg (cost $26.00)
Correct Answer C. X = 66.67 kg, Y = 0 kg, Z = 33.33 kg (cost $25.00)
D. X = 70.00 kg, Y = 10.00 kg, Z = 20.00 kg (cost $26.50)
Correct Answer
C
Correct Option:
X = 66.67 kg, Y = 0 kg, Z = 33.33 kg (cost $25.00)

About This Question

This is Waec Model Questions Vol1 2023 Agricultural Science Question 42. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.

Difficulty level: Medium .

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