Question 1014311
B = Bianca's age
P = Pio's age
M = Margie's age


B = 2P
M = 2B
(B+10)+(P+10)+(M+10) = 58


Write everything in terms of B.


B + P + M = 28
2P + P + 4P = 28
P = 4


Bianca is twice as old as Pio, so Bianca is 8.