Question

The average of earnings of a man for the first four months, the fifth to the eighth months and the last four months in a particular year are rs.5,000 per month, rs.6,000 per month and rs.10,000 per months respectively. What is the average salary per month in that year?

Answer 1

it is sum of all salaries divided by 12
$= > 5000 + 6000 + 10000 \div 12 \\ = > 1750$
average salary is ₹1750

Answer 2

Given That:
Earnings for 1 to 4 months = 5000 × 4 = ₹20000
Earnings for 5 to 8 months = 6000 × 4 = ₹24000
Earnings for 9 to 12 months = 10000 × 4 = ₹40000

Therefore, average earning for the year
= (20000 + 24000 + 40000)/3
= 28000 per month

Hence the average salary of the man for the given year is ₹28000 per month.

Hope you got it!