15% of 20 is 3 so 20-3 = 17
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620 - 20% = 496
20
11.20
To find the result when 320 is decreased by 15 percent, you first calculate 15 percent of 320 by multiplying 320 by 0.15, which equals 48. Then, subtract 48 from 320 to find the final result. The result of decreasing 320 by 15 percent is 272.
Answer: 45% Work: 20 is decreased to 11 9 = D x 20 --- ---- 20 20 20 divided by 9 = .45 .45 as a percent = 45 %