In what ratio must a grocer mix tea at $ 60 a kg, and $

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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%?

1. 3 : 2
2. 3 : 4
3. 3 : 5
4. 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,

∴ Required ratio = 3 : 2