Answer:
8 cousins
Step-by-step explanation:
B = Bonnie=2*R
R = Robert
G = George = 5 = B -11 (add 11 on both sides of the equation)
B = 5 + 11 = 16 cousins
From B=2*R (substitute the value of B)
16=2*R (divide 2 on both sides of the equation)
R=16/2=8 cousins