The average revenues of 9 consecutive years of a company is Rs 80 lakhs. If the average of the first 5 years is Rs 75 lakhs and that of the last 5 years is Rs 87 lakhs, find the revenue for the 5
th
year.
- ARs 90 lakhs
- BRs 92 lakhs
- CRs 88 lakhs
- DRs 86 lakhs
Solution & Step-by-step Explanation
Let the total revenue of 9 consecutive years be T
9
.
Average revenue of 9 years=80 lakhs
T
9
=9×80=720 lakhs
Let the total revenue of the first 5 years be F
5
.
Average revenue of first 5 years=75 lakhs
F
5
=5×75=375 lakhs
Let the total revenue of the last 5 years be L
5
.
Average revenue of last 5 years=87 lakhs
L
5
=5×87=435 lakhs
In the sum of F
5
and L
5
, the 5
th
9
.
Average revenue of 9 years=80 lakhs
T
9
=9×80=720 lakhs
Let the total revenue of the first 5 years be F
5
.
Average revenue of first 5 years=75 lakhs
F
5
=5×75=375 lakhs
Let the total revenue of the last 5 years be L
5
.
Average revenue of last 5 years=87 lakhs
L
5
=5×87=435 lakhs
In the sum of F
5
and L
5
, the 5
th