Sum of n Terms of an Arithmetic Progression

The sum of 40 terms of an arithmetic progression is 430 and the sum of 60 terms is 945. Find the 20th term.

If the sum of n-term of an arithmetic progression sequence 25,22,19,... is 116 , then find the last term.

If the ratio of the sum of n terms of two arithmetic progressions is (3n+8):(7n+15) then the ratio of their 12th terms is :

The ratio of the sum of n terms of two arithmetic progressions is given by (2n+3) : (5n -7) . Find the ratio of their nth terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4:9n+6. Find the ratio of their 18 th terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4: 9n+6. Find the ratio of their 18th terms.

The sum of n terms of two arithmetic progression is in the ratio 2n+1:2n-1. Find the ratio of 10^(t)h term.

The sum of n terms of two arithmetic progressions are in the ratio (3n+8):(7n+15)* Find the ratio of their 12th terms.

The sum of n terms of two arithmetic progressions are in the ratio 2n+3:6n+5, then the ratio of their 13th terms, is