40 percent of N = 0.4 x N
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the number = 20 Let N = the number 30% of N = 15% of 40 30% * N = 15% * 40 0.30N = 0.15* 40 0.30N/0.30 = 6/0.30 N = 20
To convert 40% (or any percent) to a decimal divide by 100: 40% ÷ 100 = 0.4
0.4
62.5%
40% = 40/100 = 2/5 (simplified)