human
Cindy was 5 years old. Her sister Jan was 2 years older than Cindy. Their oldest sister Marcia was twice as old as Jan. Greg was two years older than Marcia. How old was Greg?
assistant
How old was Jan? ** Jan was 2 years older than Cindy who was 5 so 2+5 = <<2+5=7>>7 years old
How old was Marcia? ** Marica was twice as old as Jan so 2*7 = <<2*7=14>>14 years old
How old was Greg? ** Greg was 2 years older than Marcia who was 14 so 2+14 = <<2+14=16>>16 years old
#### 16