Respuesta :
Let x = how old Benjamin is
Let y= how old Sherry is
y=4x,
Since sherry is 72, then y=72
72=4x, divide both sides by 4 and x= 18
Benjamin is 18 yrs old
Let x = how old Benjamin is
Let y= how old Sherry is
y=4x,
Since sherry is 72, then y=72
72=4x, divide both sides by 4 and x= 18
Benjamin is 18 yrs old