the average age of five workers in a store was 36 years. when a new worker joined then the average age of all of them become 37 years. How old was the new worker?
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The age of new worker was 42 years.
Given : Average
Find : Age of new worker
Solution: Average age = sum of ages/number of people
Keep the values in formula
36 = Sum of ages of old workers/5
Sum of ages of old workers = 36*5
Sum of ages of old workers = 180
Average of new ages = Sum of ages of new workers/6
Sum of ages of new workers = 37*6
Sum of ages of new workers = 222
Age of new worker = Sum of ages of new workers - Sum of ages of old workers
Age of new worker = 222 - 180
Age of new worker = 42 years
Hence, the new worker wa 42 years old.
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