Question: 20 is 40 percent of what number

Answer: 20 is 40 percent of 50

Step by step solution for calculating 20 is 40 percent of what number

We already have our first value 20 and the second value 40. Let's assume the unknown value is Y which answer we will find out.

As we have all the required values we need, Now we can put them in a simple mathematical formula as below:

STEP 1 20 = 40% × Y

STEP 2 20 = 40/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 40 we will arrive at:

STEP 3 Y = 20 × 100/40

STEP 4 Y = 20 × 100 ÷ 40

STEP 5 Y = 50

Finally, we have found the value of Y which is 50 and that is our answer.

You can easily calculate 20 is 40 percent of what number by using any regular calculator, simply enter 20 × 100 ÷ 40 and you will get your answer which is 50

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Sample questions, answers, and how to

Question: Your friend has a bag of marbles, and he tells you that 40 percent of the marbles are red. If there are 20 red marbles. How many marbles does he have altogether?

Answer: 50 marbles.

How To: In this problem, we know that the Percent is 40, and we are also told that the Part of the marbles is red, so we know that the Part is 20.

So, that means that it must be the Total that's missing. Here is the way to figure out what the Total is:

Part/Total = Percent/100

By using a simple algebra we can re-arrange our Percent equation like this:

Part × 100/Percent = Total

If we take the "Part" and multiply it by 100, and then we divide that by the "Percent", we will get the "Total".

Let's try it out on our problem about the marbles, that's very simple and it's just two steps! We know that the "Part" (red marbles) is 20.

So step one is to just multiply that Part by 100.

20 × 100 = 2000

In step two, we take that 2000 and divide it by the "Percent", which we are told is 40.

So, 2000 divided by 40 = 50

And that means that the total number of marbles is 50.


Question: A high school marching band has 20 flute players, If 40 percent of the band members play the flute, then how many members are in the band?

Answer: There are 50 members in the band.

How To: The smaller "Part" in this problem is 20 since there are 20 flute players and we are told that they make up 40 percent of the band, so the "Percent" is 40.

Again, it's the "Total" that's missing here, and to find it, we just need to follow our 2 step procedure as the previous problem.

For step one, we multiply the "Part" by 100.

20 × 100 = 2000

For step two, we divide that 2000 by the "Percent", which is 40.

2000 divided by 40 equals 50

That means that the total number of band members is 50.

Have time and want to learn the calculation?

Let's assume the unknown value is Y

First writing it as: 100% / Y = 40% / 20

Drop the percentage marks to simplify your calculations: 100 / Y = 40 / 20

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 40 / 20 ) Y

Simplifying the right side, we get: 100 = 40 Y

Dividing both sides of the equation by 40, we will arrive at 50 = Y

This leaves us with our final answer: 20 is 40 percent of 50

Percentage Table

20 is 40 percent of 50
20.01 is 40 percent of 50.025
20.02 is 40 percent of 50.05
20.03 is 40 percent of 50.075
20.04 is 40 percent of 50.1
20.05 is 40 percent of 50.125
20.06 is 40 percent of 50.15
20.07 is 40 percent of 50.175
20.08 is 40 percent of 50.2
20.09 is 40 percent of 50.225
20.1 is 40 percent of 50.25
20.11 is 40 percent of 50.275
20.12 is 40 percent of 50.3
20.13 is 40 percent of 50.325
20.14 is 40 percent of 50.35
20.15 is 40 percent of 50.375
20.16 is 40 percent of 50.4
20.17 is 40 percent of 50.425
20.18 is 40 percent of 50.45
20.19 is 40 percent of 50.475
20.2 is 40 percent of 50.5
20.21 is 40 percent of 50.525
20.22 is 40 percent of 50.55
20.23 is 40 percent of 50.575
20.24 is 40 percent of 50.6
20.25 is 40 percent of 50.625
20.26 is 40 percent of 50.65
20.27 is 40 percent of 50.675
20.28 is 40 percent of 50.7
20.29 is 40 percent of 50.725
20.3 is 40 percent of 50.75
20.31 is 40 percent of 50.775
20.32 is 40 percent of 50.8
20.33 is 40 percent of 50.825
20.34 is 40 percent of 50.85
20.35 is 40 percent of 50.875
20.36 is 40 percent of 50.9
20.37 is 40 percent of 50.925
20.38 is 40 percent of 50.95
20.39 is 40 percent of 50.975
20.4 is 40 percent of 51
20.41 is 40 percent of 51.025
20.42 is 40 percent of 51.05
20.43 is 40 percent of 51.075
20.44 is 40 percent of 51.1
20.45 is 40 percent of 51.125
20.46 is 40 percent of 51.15
20.47 is 40 percent of 51.175
20.48 is 40 percent of 51.2
20.49 is 40 percent of 51.225
20.5 is 40 percent of 51.25
20.51 is 40 percent of 51.275
20.52 is 40 percent of 51.3
20.53 is 40 percent of 51.325
20.54 is 40 percent of 51.35
20.55 is 40 percent of 51.375
20.56 is 40 percent of 51.4
20.57 is 40 percent of 51.425
20.58 is 40 percent of 51.45
20.59 is 40 percent of 51.475
20.6 is 40 percent of 51.5
20.61 is 40 percent of 51.525
20.62 is 40 percent of 51.55
20.63 is 40 percent of 51.575
20.64 is 40 percent of 51.6
20.65 is 40 percent of 51.625
20.66 is 40 percent of 51.65
20.67 is 40 percent of 51.675
20.68 is 40 percent of 51.7
20.69 is 40 percent of 51.725
20.7 is 40 percent of 51.75
20.71 is 40 percent of 51.775
20.72 is 40 percent of 51.8
20.73 is 40 percent of 51.825
20.74 is 40 percent of 51.85
20.75 is 40 percent of 51.875
20.76 is 40 percent of 51.9
20.77 is 40 percent of 51.925
20.78 is 40 percent of 51.95
20.79 is 40 percent of 51.975
20.8 is 40 percent of 52
20.81 is 40 percent of 52.025
20.82 is 40 percent of 52.05
20.83 is 40 percent of 52.075
20.84 is 40 percent of 52.1
20.85 is 40 percent of 52.125
20.86 is 40 percent of 52.15
20.87 is 40 percent of 52.175
20.88 is 40 percent of 52.2
20.89 is 40 percent of 52.225
20.9 is 40 percent of 52.25
20.91 is 40 percent of 52.275
20.92 is 40 percent of 52.3
20.93 is 40 percent of 52.325
20.94 is 40 percent of 52.35
20.95 is 40 percent of 52.375
20.96 is 40 percent of 52.4
20.97 is 40 percent of 52.425
20.98 is 40 percent of 52.45
20.99 is 40 percent of 52.475