0
Anonymous
28 decreased by 25 percent = 21
= 28 - (25% * 28)
= 28 - (0.25 * 28)
= 28 - 7
= 21
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When 40 is decreased by 30% the result is 28.
40
Let that number be x. So we have, x - 0.3x = 28 0.7x = 28 7x = 280 x = 40 Check.
7 is 25% of 28
28 % = 28/100 = 7/25