Kim got 2 candy bars a week for 16 weeks so she got 2*16 = <<2*16=32>>32 candy bars
She would only eat 1 candy bar every 4 weeks so in 16 weeks she only ate 16/4 = <<16/4=4>>4 candy bars
She saved 32 candy bars and only ate 4 so she still has 32-4 = <<32-4=28>>28 candy bars
#### 28