Question

P,q,105,r,s membentuk barisan aritmatika, tentukan nilai p+q+r+s

Answer 1

P = 105 - 2b
q = 105 - b
r = 105 + b
s = 105 +2b

p +q + r +s = 105 - 2b + 105 - b + 105 + b + 105 +2b = 420