8 kg of rice costing Rs 10 per kg and 10 kg of rice costing Rs 12 per kg are mixed Find the average ...........

Quantitative Aptitude (CDS) Mixture and Alligation

8 kg of rice costing Rs.10 per kg and 10 kg of rice costing Rs.12 per kg are mixed. Find the average cost of the mixture per kg.

Rs.11

Rs.11.11

Rs.12

Rs.12.11

Explanation:

We have , n1/n2 = A2 – Aw / Aw – A1
Or 8/10 = 12 – Aw / Aw – 10
Or 4/5 = 12- Aw / Aw – 10
Or 4Aw – 40 = 60 – 5 Aw
Or 9Aw = 100
Or Aw = 100/9 = 11.11
Hence, the average cost of the mixture = Rs.11.11 per kg.

By: bhavesh kumar singh

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8 kg of rice costing Rs 10 per kg and 10 kg of rice costing Rs 12 per kg are mixed Find the average ...........

Explanation:

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