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In what ratio must a grocer mix tea at $ 60 a kg, and $ 65 a kg, so that by selling the mixture at $ 68.20 a kg, he may gain 10%?
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- 3 : 2
- 3 : 4
- 3 : 5
- 4 : 5
Correct Option: A
Given in question , S.P. of 1 kg mixture = $ 68.20, Gain = 10%
∴ C.P. of 1 kg mixture = $ | ![]() | 68.20 × | 100 | ![]() | = $ 62 | |
110 |
By the rule of alligation,
![]( http://images.interviewmania.com/wp-content/uploads/2019/08/20a.png)
∴ Required ratio = 3 : 2