30% off $100:
= 30% discount applied to $100
= $100 - 30% x $100
= $100 - 0.30 x $100
= $100 - $30
= $70
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30% off of 15.00 dollars = (100-30)% of 15 dollars = 70 percent of 15.00 dollars = 15.00*70/100 = 10.50 dollars
When the full price is greater than 100 dollars.
30 percent off of $30 would be $9 off.
30% off is like only paying 70% (100-30) So 24 x 0.7 = 16.8 Answer: 16 dollars 80 cents
30/100*1550 = 465 dollars