Question

The 18th term of an Ap is 30 more than its 8th termif the 15th term of the Ap is 48 find the Ap

Answer 1

Answer:

Step-by-step explanation:

A18=30+A8

A18= A+17D

A8= A+7D

Therefore, A+17 D=30+ A+7D

               A cancel on both sides

              17D-7D=30

                 10D =30

                  D=10

A15=48

A+14D=48

A+140=48

A=48-140

A= -92

Ap=-92,-102,-122,- - -

Answer 2

Answer:

Step-by-step explanation:

a18=a+17d

a8=a+7d

a+17d=30+a+7d

a cancels on both side

17d-7d=30

10d=30

d=3

a15=a+14d

48=a+14×3

48=a+42

a=48-42

a=6

thus the A.P is 6,9,12,15..........