The sum of first 30 terms and 40 terms of an A.P are 2265 and 4020 find common difference

The sum of first 30 terms and 40 terms of an A.P are 2265 and 4020 fin

1.	The sum of first 30 terms and 40 terms of an A.P are 2265 and 4020 find common difference
Answer» d=5