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  1. 12 kg of rice costing 30 per kg is mixed with 8 kg of rice costing 40 per kg.The average per kg price of mixed rice is
    1. ₹ 38
    2. ₹ 37
    3. ₹ 35
    4. ₹ 34
Correct Option: D

Total cost price of 20kg of mixed rice = (12 × 30 + 8 × 40) = ₹ 680

∴ Average per kg price =
680
= ₹ 34
20

Second method to find the required average ,
y1 = 12, A1 = 30
y2 = 8, A2 = 40
∴ Average =
A1y1 + A2y2
y1 + y2

Average =
30 × 12 + 40 × 8
12 + 8

Average =
360 + 320
20

Average =
680
= ₹ 34
20



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