Question 21
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By mixing two brands of tea and selling the mixture at the rate of ₹ 177 per kg. a shopkeeper makes a profit of 18%. If to every 2 kg of one brand costing ₹ 200 per kg, 3 kg of the other brand is added, then how much per kg does the other brand cost?
- A ₹ 110
- B ₹ 120
- C ₹ 140
- D None of these Correct
Correct Answer: Option D
Let the cost of the brand be ₹ X per kg.
C.P. of 5 kg = (2 x 200 + 3 x X) = ₹ (400 + 3X)
S.P of 5 kg = ₹ (5 x 177) = ₹ 885
[885 - (400 + 3X)]/(400 + 3X) x 100 = 18
24250 – 150X = 3600 + 27X
177X = 20650 => X = 116 
So, cost of the other brand = ₹ 116.66.
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