Question

aditi saved rs. 500 in the first month of a year and then increased her monthly savings by rps 50.if in the nth term month her saving become rs 1000.find n​

Answer 1

Answer:

1st month of a year = rs.500

after every month saving money = rs.50

so, AP is 500, 550, 600,..........., 1000

since, a = 500 l = An = 1000

d = 50

therefore, An = a + (n-1)d

1000 = 500 + (n-1)50

1000-500 = 50n-50

500+50 = 50n

n = 550/50 11

So, n =11

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