Free points, One last question, 3k+16=8+5k

Which number produces a rationale number when multiplied by 1/5

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

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account