Question

In an AP sum of the first 10 term is 400 and sum of the next 10 term is 1000. Find first term and the common difference.

Answer 1

hey here is your answer
a=-140,d=60,
it is helpful please mark it as Brianlist answer

Answer 2

hey here is your answer
a=-140,d=60,
it is helpful please mark it as Brianlist answer