which term of the AP 7,12,22....is30 more than its 20th term.
pls give step by step explanation
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Answer:
Note:- Your AP is wrong. The correct sequence would be:- 7, 12, 17, 22 ..........
a = 7
d = 5
20th term = a + (n-1)d
= 7 + (20-1)5
= 7 + (19)5
= 7 + 95
= 102
30 more than this = 102 + 30
= 132
a + (n-1)d = 132
7 + (n-1)5 = 132
7 + 5n - 5 = 132
2 + 5n = 132
5n = 130
n = 130/5
n = 26
The 26th term of AP will be 30 more than the 20th term of AP.
Hope it helps
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