Question

Also give reason for your answer please.

Answer 1

Answer:

Step-by-step explanation:

1st case

x=4

16p+20+r=0

16p+r=-20........1

x=1/4

p/16 + 5/4 +r =0

p+20+16r=0

p+16r=-20............2

Subtracting equation 2 from 1

15p-15r=0

p=r

Option (3) is correct.