Example 7 The income of a person is Rs. 3,00,000, in the first year and he receives a
ncrease of Rs.10,000 to his income per year for the next 19 years. Find the tot
mount, he received in 20 years.
lution Here, we have an A.P. with a = 3,00,000, d= 10,000, and n = 20.
sing the sum formula, we get,
20
160000+19X100001–10 (790000) = 79.00.000 i want example 7 with proper explanation
Answers
Answered by
1
Answer:
Total income= 79,00,000
Step-by-step explanation:
You are correct ,no need to be in doubt
Just little mistake is in last step to calculate the
sum of 20 terms.
**************
The income of that person:
1st yr: 3,00,000Rs
2nd : 300000+10000
Total years =19+1( present year with salary 300000)
=20 years
This forms an A.P with
a=3,00000, d=Rs 10000, n=20
To find the total income in these 20 years we will find the sim of 2o terms
of our AP:
S₂₀ = 20/2 { 2*300000 +(20-1)*10000 }
=10 * ( 600000+190000)
=10*7,90,000
=79,00,000
Total income= 79,00,000
Answered by
1
Answer:
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Step-by-step explanation:
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