The average revenues of 9 consecutive years of a company is Rs 80 lakhs. If the average of first 5 years is Rs 75 lakhs and that of last 5 years is Rs 87 lakhs, find the revenue for the 5thyear.
Total revenues of 9 years of the company = $$80 \times 9$$ = Rs. 720 lakhs
Total revenue of first 5 years = $$75 \times 5$$ = Rs. 375 lakhs
Total revenue of last 5 years = $$87 \times 5$$ = Rs. 435 lakhs
$$\therefore$$ Revenue of 5th year = (375 + 435) - 720 = 810 - 720
= Rs. 90 lakhs
=> Ans - (A)
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