Amna can type 710 words in 15 minutes, Sara can type 810 word in 18 minutes and Uzma can type 780 words in 20 minutes. who is the fastest typist?

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