a grocer purchased 80 kg of rice at tk 13 50 per, Profit and Loss, General Mathematics

Question:a grocer purchased 80 kg of rice at tk 13.50 per kg and mixed with 112 kg rice at tk 16 per kg. At what rate per kg should he sell the mixture to gain 16%?

Answer Tk 17.40 per kg

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+ ExplanationNot ModeratedC.P of 200 kg of mix = tk `(80 xx 13.50 +120 xx 16)`
= Tk 3000
S.P= 116 % of tk 3000
= Tk `(116/100 xx 3000)` 
= Tk 3480
Rate of S.P of the mixture = Tk `(3480/200)` per kg
   = Tk 17.40 per kg

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a grocer purchased 80 kg of rice at tk 13.50 per kg and mixed with 112 kg rice at tk 16 per kg. At what rate per kg should he sell the mixture to gain 16%?