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Solution for What is 21 percent of 40.:

21 percent *40. =

(21:100)*40. =

(21*40.):100 =

840:100 = 8.4

Now we have: 21 percent of 40. = 8.4

Question: What is 21 percent of 40.?

Percentage solution with steps:

Step 1: Our output value is 40..

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

Step 3: From step 1 above,{40.}={100\%}.

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

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

{40.}={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{40.}{x}=\frac{100\%}{21\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{40.}=\frac{21}{100}

\Rightarrow{x} = {8.4}

Therefore, {21\%} of {40.} is {8.4}

• 1% of 40. is 0.4
  39.6
• 2% of 40. is 0.8
  39.2
• 3% of 40. is 1.2
  38.8
• 4% of 40. is 1.6
  38.4
• 5% of 40. is 2
  38
• 6% of 40. is 2.4
  37.6
• 7% of 40. is 2.8
  37.2
• 8% of 40. is 3.2
  36.8
• 9% of 40. is 3.6
  36.4
• 10% of 40. is 4
  36
• 11% of 40. is 4.4
  35.6
• 12% of 40. is 4.8
  35.2
• 13% of 40. is 5.2
  34.8
• 14% of 40. is 5.6
  34.4
• 15% of 40. is 6
  34
• 16% of 40. is 6.4
  33.6
• 17% of 40. is 6.8
  33.2
• 18% of 40. is 7.2
  32.8
• 19% of 40. is 7.6
  32.4
• 20% of 40. is 8
  32
• 21% of 40. is 8.4
  31.6
• 22% of 40. is 8.8
  31.2
• 23% of 40. is 9.2
  30.8
• 24% of 40. is 9.6
  30.4
• 25% of 40. is 10
  30
• 26% of 40. is 10.4
  29.6
• 27% of 40. is 10.8
  29.2
• 28% of 40. is 11.2
  28.8
• 29% of 40. is 11.6
  28.4
• 30% of 40. is 12
  28
• 31% of 40. is 12.4
  27.6
• 32% of 40. is 12.8
  27.2
• 33% of 40. is 13.2
  26.8
• 34% of 40. is 13.6
  26.4
• 35% of 40. is 14
  26
• 36% of 40. is 14.4
  25.6
• 37% of 40. is 14.8
  25.2
• 38% of 40. is 15.2
  24.8
• 39% of 40. is 15.6
  24.4
• 40% of 40. is 16
  24
• 41% of 40. is 16.4
  23.6
• 42% of 40. is 16.8
  23.2
• 43% of 40. is 17.2
  22.8
• 44% of 40. is 17.6
  22.4
• 45% of 40. is 18
  22
• 46% of 40. is 18.4
  21.6
• 47% of 40. is 18.8
  21.2
• 48% of 40. is 19.2
  20.8
• 49% of 40. is 19.6
  20.4
• 50% of 40. is 20
  20
• 51% of 40. is 20.4
  19.6
• 52% of 40. is 20.8
  19.2
• 53% of 40. is 21.2
  18.8
• 54% of 40. is 21.6
  18.4
• 55% of 40. is 22
  18
• 56% of 40. is 22.4
  17.6
• 57% of 40. is 22.8
  17.2
• 58% of 40. is 23.2
  16.8
• 59% of 40. is 23.6
  16.4
• 60% of 40. is 24
  16
• 61% of 40. is 24.4
  15.6
• 62% of 40. is 24.8
  15.2
• 63% of 40. is 25.2
  14.8
• 64% of 40. is 25.6
  14.4
• 65% of 40. is 26
  14
• 66% of 40. is 26.4
  13.6
• 67% of 40. is 26.8
  13.2
• 68% of 40. is 27.2
  12.8
• 69% of 40. is 27.6
  12.4
• 70% of 40. is 28
  12
• 71% of 40. is 28.4
  11.6
• 72% of 40. is 28.8
  11.2
• 73% of 40. is 29.2
  10.8
• 74% of 40. is 29.6
  10.4
• 75% of 40. is 30
  10
• 76% of 40. is 30.4
  9.6
• 77% of 40. is 30.8
  9.2
• 78% of 40. is 31.2
  8.8
• 79% of 40. is 31.6
  8.4
• 80% of 40. is 32
  8
• 81% of 40. is 32.4
  7.6
• 82% of 40. is 32.8
  7.2
• 83% of 40. is 33.2
  6.8
• 84% of 40. is 33.6
  6.4
• 85% of 40. is 34
  6
• 86% of 40. is 34.4
  5.6
• 87% of 40. is 34.8
  5.2
• 88% of 40. is 35.2
  4.8
• 89% of 40. is 35.6
  4.4
• 90% of 40. is 36
  4
• 91% of 40. is 36.4
  3.6
• 92% of 40. is 36.8
  3.2
• 93% of 40. is 37.2
  2.8
• 94% of 40. is 37.6
  2.4
• 95% of 40. is 38
  2
• 96% of 40. is 38.4
  1.6
• 97% of 40. is 38.8
  1.2
• 98% of 40. is 39.2
  0.8
• 99% of 40. is 39.6
  0.4
• 100% of 40. is 40
  0

Solution for What is 40. percent of 21:

40. percent *21 =

(40.:100)*21 =

(40.*21):100 =

840:100 = 8.4

Now we have: 40. percent of 21 = 8.4

Question: What is 40. 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}={40.\%}.

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

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

{x}={40.\%}(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\%}{40.\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{21}=\frac{40.}{100}

\Rightarrow{x} = {8.4}

Therefore, {40.\%} of {21} is {8.4}