Question

If 3+k,18-k,5k+1 are in AP then find K

Answer 1

Answer:

The value of k is 8.

Step-by-step explanation:

Here , a = t1 = 3 + k

t2 = 18 - k

t3 = 5k + 1

Comman difference = d = t2 - t1

d = 18 - k - 3+ k

d = 15

d = t3 - t2

15 = 5k + 1 - 18 - k

15 = 4k - 17

15 + 17 = 4k

32 = 4k

k = 32 ÷ 4

k = 8