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Question 87
The average revenues of 7 consecutive years of a company is Rs 83 lakhs. If the average of first 4 years is Rs 78 lakhs and that of last 4 years is Rs 90 lakhs, find the revenue for the 4th year.
Solution
Total revenues of 7 years of the company = $$83 \times 7$$ = Rs. 581 lakhs
Total revenue of first 4 years = $$78 \times 4$$ = Rs. 312 lakhs
Total revenue of last 4 years = $$90 \times 4$$ = Rs. 360 lakhs
$$\therefore$$ Revenue of 4th year = (312 + 360) - 581 = 672 - 581
= Rs. 91 lakhs
=> Ans - (A)
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