The average annual expenditure of an employee for 10 years from 1981 to 1990 was Rs.4500, he spent Rs. 3200 in 1981 and Rs. 5700 in 1991. Find his average yearly expenditure during the ten years 1982 to 1991
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Step-by-step explanation:
Total expenditure from 1981 to 1990
= 45000
Total expenditure from 1982 to 1991
= 45000 - 3200 + 5700 = 47500
Average yearly expenditure = 4750
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