If 12th term AP is-13 and sum of its first four term is 24, what is the sum of its first 10th term

If 12th term AP is-13 and sum of its first four term is 24, what is th

1.	If 12th term AP is-13 and sum of its first four term is 24, what is the sum of its first 10th term
Answer» a=9,d=-2,a10=-9 -9 0...? 0