How much chicory, costing Rs. 100/kg should be added to 40 kg of coffee costing Rs. 45/kg so that the mixture will be worth Rs. 60/kg?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 15 kg
Given that
40 kg of coffee costing Rs. 45/kg
Total amount of 40 kg = 40 × 45 = Rs. 1800
Let the amount of coffee be x kg
According to the question
⇒ 100 x + 1800 = 60 (x + 40)
⇒ 100 x - 60 x = 2400 - 1800 = 600
⇒ 40x = 600
⇒ x = 60/4 = 15 kg