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the income of a person is Rs. 300,000 in...

the income of a person is Rs. 300,000 in the first year and he receivers in increase of Rs. 10000 to his income per year for the next 19 years. Find the total amount, he received in 20 years.

Text Solution

Verified by Experts

Let S be the total amount received in 20 years.
Then,
`S_n​=n/2​[2a+(n−1)d]`
`S=(20)/2​{2xx300,000+(20−1)xx10,000}`
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