Correct Answer: 3.75
Explanation:
Step 1: Understand the initial setup
Step 2: Let x kg of husk be added
(1 + x) / (20 + x) = 20 / 100 ⇒ (1 + x) / (20 + x) = 1 / 5
Step 3: Cross-multiply and solve
5(1 + x) = 20 + x 5 + 5x = 20 + x 5x - x = 20 - 5 4x = 15 x = 15 / 4 = 3.75
Answer: 3.75 kg
To make the husk content 20%, you must add 3.75 kg of husk to the original 20 kg mixture.
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