Question

A.P. Need step by step solution​

Answer 1

Step-by-step explanation:

Tn=a+(n-1)d

16= a+(11-1)d

16= a+10d

similarly

29= a+20d

on subtracting eq.2 from eq.1 we get

29-16= a+20d-(a+10d)

13= a+20d-a-10d

13= 10d

1.3=d

16= a+10d

16=a+10×1.3

16= a + 13

16-13=a

3=a

hence a= 3 and d= 1.3

34th term

tn= a+33d

= 3+33×1.3

= 3+42.9

= 45.9

55th term

tn= a+54d

= 3+54×1.3

= 3+70.2

= 73.2

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