Question

The first term of an arithmetic series is 16 and the last is 60. The
Sum of the arithmetic series is 342. Find the common difference.​

Answer 1

Answer:

a = 16

a+(n-1)d = 60

ie, 16 + (n-1)d = 60

ie, (n-1)d = 44

Sn = 342

ie, n(16+60)/2 = 342

ie, n= 9

therefore, d= 5.5