Holden's current master bedroom is 309 sq ft and his master bath is 150 sq ft.  If he wants to add a home office/personal gym divided space that is twice as large as his bedroom and bathroom, how much sq ft will this new room have?
His bedroom is 309 sq ft and his bathroom is 150 sq ft so these two rooms are 309+150 = <<309+150=459>>459 sq ft
He wants the new room to be twice as large as his bedroom/bathroom that is 459 sq so the new room is 2*459 = <<2*459=918>>918 sq ft
#### 918