Question

Income of a person 300000 is the
He receives on increase of Rs 10000
for the next 19 years Total
received in 20 year is ?​

Answer 1

Answer:

7900000

Step-by-step explanation:

The income of a person in 1st year = Rs 300000

The income of a person in 2nd year = Rs 300000 + 10000

= Rs 310000

The income of a person in 3rd year = Rs 310000 + 10000

= Rs 320000

and so,on

Therefore, the AP is

300000, 310000, 320000,…

Here a = 300000, d = 310000 – 300000 = 10000

and n = 20

We know that,





⇒ S20 = 10 [600000 + 190000]

⇒ S20 = 10[790000]

⇒ S20 = 7900000

Hence, the total amount he received in 20 years is Rs 7900000.