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Two types of tea costing $ 180 per kg and $ 280 per kg should be mixed in the ratio so that the mixture obtained, sold at $ 320 per kg to earn a profit of 20% is
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- 3 : 13
- 1 : 13
- 4 : 13
- 2 : 13
Correct Option: D
Given , S.P. of two types tea a profit of 20% = $ 320 per kg
∴ C.P. of mixture = | 120 |
C.P. of mixture = Rs. | per kg. | 3 |
By rule of alligation ,
![](http://images.interviewmania.com/wp-content/uploads/2019/08/38a.png )
∴ Required ratio = | : | = 2 : 13 | 3 | 3 |