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Question 1:
How much chicory at Rs. 5 a kg should be added to 20 kg of coffee at Rs. 12 a kg so that the mixture be worth Rs. 7.50 a kg.? A. 21 kg
B. 15 kg
C. 36 kg
Feedback Ratio in which coffee and chicory should be mixed= 12 - 7.5 : 7.5 - 5
4.5 : 2.5 ⇒ 9 : 5
Let x be quantity at 4/ kg
∴ 9 : 5 = x : 20 ⇒ x = 36 kg
4.5 : 2.5 ⇒ 9 : 5
Let x be quantity at 4/ kg
∴ 9 : 5 = x : 20 ⇒ x = 36 kg
D. 42 kg
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