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A man purchased 7 bags of rice at the rate of Rs. 800 each, 8 bags of rice at Rs. 1000 each and 5 bags of rice at the rate of Rs. 1200 each. What is the average cost of one bag of rice ?

A. Rs. 1000 B. Rs. 980 C. Rs. 1120 D. Rs. 1050 Answer: Option B
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Solution(By Apex Team)

$\begin{array}{l}\text{According to the question,}\\ \text{Average}\\ =\Large\frac{7 \times 800+8 \times 1000+5 \times 1200}{20} \\ =\Large\frac{5600+8000+6000}{20} \\ =\Large\frac{19600}{20} \\ \therefore \text { Average }=\text { Rs. } 980 \end{array}$

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