Answer :
x-weigh of Ted
y-weigh of Julie
z-weigh of Mike
x=2y
z=3y
x+y+z=210lbs
2y+y+3y=210
6y=210 /:6
y=35 lbs
x=2y=2*35=70 lbs
z=3y=3*35=105 lbs
y-weigh of Julie
z-weigh of Mike
x=2y
z=3y
x+y+z=210lbs
2y+y+3y=210
6y=210 /:6
y=35 lbs
x=2y=2*35=70 lbs
z=3y=3*35=105 lbs