The average revenues of 9 consecutive years of a company is Rs 68 lakhs. If the average of first 5 years is Rs 63 lakhs and that of last 5…

As per the given data

Average revenues of 9 consecutive years of a company = Rs.68 lakhs

Total revenues of 9 consecutive years = 68 × 9 = Rs.612 lakhs

Average revenue of the first 5 years = Rs.63 lakhs

Revenue of the first 5 years = 63 × 5 = Rs.315 lakhs

Average revenue of the last 5 years = Rs.75 lakhs

Revenue of the last 5 years = 75 × 5 = Rs.375 lakhs

⇒ Revenue for the 5th year = (Revenue of the first 5 years + Revenue of the last 5 years) - total revenue for 9 consecutive years

= (315 + 375) - 612

= 690 – 612 = Rs.78 lakhs