The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of first 7 years is Rs 73 lakhs and that of last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?
Total revenues of 13 years of the company = $$78 \times 13$$ = Rs. 1014 lakhs
Total revenue of first 7 years = $$73 \times 7$$ = Rs. 511 lakhs
Total revenue of last 7 years = $$85 \times 7$$ = Rs. 595 lakhs
$$\therefore$$ Revenue of 7th year = (511 + 595) - 1014 = 1106 - 1014
= Rs. 92 lakhs
=> Ans - (D)
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