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The income of a person is Rs. 3, 00,000...

The income of a person is Rs. 3, 00,000, m the first year and he receives an increase of Rs. 10.000 to his income per year for the next 19 years. Find the total amount, he received m 20 years.

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Verified by Experts

Here, a=300,000,d=10,000 and n=20.
Let S be the total amount received in 20 years.
Then,
`S_n`= `n/2` [2a+(n−1)d]
...
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