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Solution for What is 90 percent of 21:

90 percent *21 =

(90:100)*21 =

(90*21):100 =

1890:100 = 18.9

Now we have: 90 percent of 21 = 18.9

Question: What is 90 percent of 21?

Percentage solution with steps:

Step 1: Our output value is 21.

Step 2: We represent the unknown value with {x}.

Step 3: From step 1 above,{21}={100\%}.

Step 4: Similarly, {x}={90\%}.

Step 5: This results in a pair of simple equations:

{21}={100\%}(1).

{x}={90\%}(2).

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have

\frac{21}{x}=\frac{100\%}{90\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{21}=\frac{90}{100}

\Rightarrow{x} = {18.9}

Therefore, {90\%} of {21} is {18.9}

• 1% of 21 is 0.21
  20.79
• 2% of 21 is 0.42
  20.58
• 3% of 21 is 0.63
  20.37
• 4% of 21 is 0.84
  20.16
• 5% of 21 is 1.05
  19.95
• 6% of 21 is 1.26
  19.74
• 7% of 21 is 1.47
  19.53
• 8% of 21 is 1.68
  19.32
• 9% of 21 is 1.89
  19.11
• 10% of 21 is 2.1
  18.9
• 11% of 21 is 2.31
  18.69
• 12% of 21 is 2.52
  18.48
• 13% of 21 is 2.73
  18.27
• 14% of 21 is 2.94
  18.06
• 15% of 21 is 3.15
  17.85
• 16% of 21 is 3.36
  17.64
• 17% of 21 is 3.57
  17.43
• 18% of 21 is 3.78
  17.22
• 19% of 21 is 3.99
  17.01
• 20% of 21 is 4.2
  16.8
• 21% of 21 is 4.41
  16.59
• 22% of 21 is 4.62
  16.38
• 23% of 21 is 4.83
  16.17
• 24% of 21 is 5.04
  15.96
• 25% of 21 is 5.25
  15.75
• 26% of 21 is 5.46
  15.54
• 27% of 21 is 5.67
  15.33
• 28% of 21 is 5.88
  15.12
• 29% of 21 is 6.09
  14.91
• 30% of 21 is 6.3
  14.7
• 31% of 21 is 6.51
  14.49
• 32% of 21 is 6.72
  14.28
• 33% of 21 is 6.93
  14.07
• 34% of 21 is 7.14
  13.86
• 35% of 21 is 7.35
  13.65
• 36% of 21 is 7.56
  13.44
• 37% of 21 is 7.77
  13.23
• 38% of 21 is 7.98
  13.02
• 39% of 21 is 8.19
  12.81
• 40% of 21 is 8.4
  12.6
• 41% of 21 is 8.61
  12.39
• 42% of 21 is 8.82
  12.18
• 43% of 21 is 9.03
  11.97
• 44% of 21 is 9.24
  11.76
• 45% of 21 is 9.45
  11.55
• 46% of 21 is 9.66
  11.34
• 47% of 21 is 9.87
  11.13
• 48% of 21 is 10.08
  10.92
• 49% of 21 is 10.29
  10.71
• 50% of 21 is 10.5
  10.5
• 51% of 21 is 10.71
  10.29
• 52% of 21 is 10.92
  10.08
• 53% of 21 is 11.13
  9.87
• 54% of 21 is 11.34
  9.66
• 55% of 21 is 11.55
  9.45
• 56% of 21 is 11.76
  9.24
• 57% of 21 is 11.97
  9.03
• 58% of 21 is 12.18
  8.82
• 59% of 21 is 12.39
  8.61
• 60% of 21 is 12.6
  8.4
• 61% of 21 is 12.81
  8.19
• 62% of 21 is 13.02
  7.98
• 63% of 21 is 13.23
  7.77
• 64% of 21 is 13.44
  7.56
• 65% of 21 is 13.65
  7.35
• 66% of 21 is 13.86
  7.14
• 67% of 21 is 14.07
  6.93
• 68% of 21 is 14.28
  6.72
• 69% of 21 is 14.49
  6.51
• 70% of 21 is 14.7
  6.3
• 71% of 21 is 14.91
  6.09
• 72% of 21 is 15.12
  5.88
• 73% of 21 is 15.33
  5.67
• 74% of 21 is 15.54
  5.46
• 75% of 21 is 15.75
  5.25
• 76% of 21 is 15.96
  5.04
• 77% of 21 is 16.17
  4.83
• 78% of 21 is 16.38
  4.62
• 79% of 21 is 16.59
  4.41
• 80% of 21 is 16.8
  4.2
• 81% of 21 is 17.01
  3.99
• 82% of 21 is 17.22
  3.78
• 83% of 21 is 17.43
  3.57
• 84% of 21 is 17.64
  3.36
• 85% of 21 is 17.85
  3.15
• 86% of 21 is 18.06
  2.94
• 87% of 21 is 18.27
  2.73
• 88% of 21 is 18.48
  2.52
• 89% of 21 is 18.69
  2.31
• 90% of 21 is 18.9
  2.1
• 91% of 21 is 19.11
  1.89
• 92% of 21 is 19.32
  1.68
• 93% of 21 is 19.53
  1.47
• 94% of 21 is 19.74
  1.26
• 95% of 21 is 19.95
  1.05
• 96% of 21 is 20.16
  0.84
• 97% of 21 is 20.37
  0.63
• 98% of 21 is 20.58
  0.42
• 99% of 21 is 20.79
  0.21
• 100% of 21 is 21
  0

Solution for What is 21 percent of 90:

21 percent *90 =

(21:100)*90 =

(21*90):100 =

1890:100 = 18.9

Now we have: 21 percent of 90 = 18.9

Question: What is 21 percent of 90?

Percentage solution with steps:

Step 1: Our output value is 90.

Step 2: We represent the unknown value with {x}.

Step 3: From step 1 above,{90}={100\%}.

Step 4: Similarly, {x}={21\%}.

Step 5: This results in a pair of simple equations:

{90}={100\%}(1).

{x}={21\%}(2).

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have

\frac{90}{x}=\frac{100\%}{21\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{90}=\frac{21}{100}

\Rightarrow{x} = {18.9}

Therefore, {21\%} of {90} is {18.9}