on the album ¨1989¨ by taylor swift blank space is 12 seconds longer than shake it off if the combined time of the two songs is 7 minutes and 30 seconds how long is shake it off give your answer in minutes and seconds

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60