The first term of an ap is 5 more than the first term of the 2nd ap if the 9th term of the 1st ap is 49 and the 12th term of the 2nd ap is 54, if their common difference equal , find the two ap
Answers
Answered by
1
Step-by-step explanation:
a=a'+5
a9=49
a'12=54
a9=a+8d
a'12=a-5+11d. (a=a'+5)
a'12=54, a9=49
49=a+8d. (1)
54+5=a+11d
59=a+11d. (2)
From one and by elimination method
D=10/3
As d is same in both ap's
By putting d in 1
a=67/3
Similar questions