In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg, he may gain 10%?
Q1. In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg, he may gain 10%?
Answer: 3:02
Explanation: The cost price of the mixture must be 68.20/1.10 = 62. Using alligation: (65−62) : (62−60) = 3 : 2, so the two varieties are mixed in ratio 3:2.