If the sum of the 14 terms of an AP is 1050 and its first term is 10, find the 20th term

If the sum of the 14 terms of an AP is 1050 and its first term is 10,

1.	If the sum of the 14 terms of an AP is 1050 and its first term is 10, find the 20th term
Answer» T14=1050a+13d=1050And,a=10.Then 10+13d=105013d=1040d=80T20=a+19d=10+19×80=10+1520=1530 200