In an AP the sum of first 10 terms is -150 and the sum of it\'s next 10 terms is -550 find the AP.

In an AP the sum of first 10 terms is -150 and the sum of it\'s next 1

1.	In an AP the sum of first 10 terms is -150 and the sum of it\'s next 10 terms is -550 find the AP.
Answer» So easy ??