Question

If 7p - 2, 5p - 8 and p + 1 are in A.P. then p is equal to:

A. 6.5
B. 7.5
C. 8.5
D. 9.5​

Answer 1

Answer:

7.5

Step-by-step explanation:

if three(a,b,c) numbers are in AP the 2b = a+c

Answer 2

Step-by-step explanation:

here, 7p-5,5p-8 and p+1 are in A.P.

so,their d is also equal =a2-a1

so,

5p-8-(7p-2)=p+1-(5p-8)

5p-8-7p+2=p+1-5p+8

-2p-6=-4p+9

2p=15

p=7.5