Question: 100 is 80 percent of what number

Answer: 100 is 80 percent of 125

Step by step solution for calculating 100 is 80 percent of what number

We already have our first value 100 and the second value 80. 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 1 100 = 80% × Y

STEP 2 100 = 80/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 80 we will arrive at:

STEP 3 Y = 100 × 100/80

STEP 4 Y = 100 × 100 ÷ 80

STEP 5 Y = 125

Finally, we have found the value of Y which is 125 and that is our answer.

You can easily calculate 100 is 80 percent of what number by using any regular calculator, simply enter 100 × 100 ÷ 80 and you will get your answer which is 125

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Sample questions, answers, and how to

Question: Your friend has a bag of marbles, and he tells you that 80 percent of the marbles are red. If there are 100 red marbles. How many marbles does he have altogether?

Answer: 125 marbles.

How To: In this problem, we know that the Percent is 80, and we are also told that the Part of the marbles is red, so we know that the Part is 100.

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 100.

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

100 × 100 = 10000

In step two, we take that 10000 and divide it by the "Percent", which we are told is 80.

So, 10000 divided by 80 = 125

And that means that the total number of marbles is 125.


Question: A high school marching band has 100 flute players, If 80 percent of the band members play the flute, then how many members are in the band?

Answer: There are 125 members in the band.

How To: The smaller "Part" in this problem is 100 since there are 100 flute players and we are told that they make up 80 percent of the band, so the "Percent" is 80.

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.

100 × 100 = 10000

For step two, we divide that 10000 by the "Percent", which is 80.

10000 divided by 80 equals 125

That means that the total number of band members is 125.

Have time and want to learn the calculation?

Let's assume the unknown value is Y

First writing it as: 100% / Y = 80% / 100

Drop the percentage marks to simplify your calculations: 100 / Y = 80 / 100

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 80 / 100 ) Y

Simplifying the right side, we get: 100 = 80 Y

Dividing both sides of the equation by 80, we will arrive at 125 = Y

This leaves us with our final answer: 100 is 80 percent of 125

Percentage Table

100 is 80 percent of 125
100.01 is 80 percent of 125.013
100.02 is 80 percent of 125.025
100.03 is 80 percent of 125.038
100.04 is 80 percent of 125.05
100.05 is 80 percent of 125.063
100.06 is 80 percent of 125.075
100.07 is 80 percent of 125.088
100.08 is 80 percent of 125.1
100.09 is 80 percent of 125.113
100.1 is 80 percent of 125.125
100.11 is 80 percent of 125.138
100.12 is 80 percent of 125.15
100.13 is 80 percent of 125.163
100.14 is 80 percent of 125.175
100.15 is 80 percent of 125.188
100.16 is 80 percent of 125.2
100.17 is 80 percent of 125.213
100.18 is 80 percent of 125.225
100.19 is 80 percent of 125.238
100.2 is 80 percent of 125.25
100.21 is 80 percent of 125.263
100.22 is 80 percent of 125.275
100.23 is 80 percent of 125.288
100.24 is 80 percent of 125.3
100.25 is 80 percent of 125.313
100.26 is 80 percent of 125.325
100.27 is 80 percent of 125.338
100.28 is 80 percent of 125.35
100.29 is 80 percent of 125.363
100.3 is 80 percent of 125.375
100.31 is 80 percent of 125.388
100.32 is 80 percent of 125.4
100.33 is 80 percent of 125.413
100.34 is 80 percent of 125.425
100.35 is 80 percent of 125.438
100.36 is 80 percent of 125.45
100.37 is 80 percent of 125.463
100.38 is 80 percent of 125.475
100.39 is 80 percent of 125.488
100.4 is 80 percent of 125.5
100.41 is 80 percent of 125.513
100.42 is 80 percent of 125.525
100.43 is 80 percent of 125.538
100.44 is 80 percent of 125.55
100.45 is 80 percent of 125.563
100.46 is 80 percent of 125.575
100.47 is 80 percent of 125.588
100.48 is 80 percent of 125.6
100.49 is 80 percent of 125.613
100.5 is 80 percent of 125.625
100.51 is 80 percent of 125.638
100.52 is 80 percent of 125.65
100.53 is 80 percent of 125.663
100.54 is 80 percent of 125.675
100.55 is 80 percent of 125.688
100.56 is 80 percent of 125.7
100.57 is 80 percent of 125.713
100.58 is 80 percent of 125.725
100.59 is 80 percent of 125.738
100.6 is 80 percent of 125.75
100.61 is 80 percent of 125.763
100.62 is 80 percent of 125.775
100.63 is 80 percent of 125.788
100.64 is 80 percent of 125.8
100.65 is 80 percent of 125.813
100.66 is 80 percent of 125.825
100.67 is 80 percent of 125.838
100.68 is 80 percent of 125.85
100.69 is 80 percent of 125.863
100.7 is 80 percent of 125.875
100.71 is 80 percent of 125.888
100.72 is 80 percent of 125.9
100.73 is 80 percent of 125.913
100.74 is 80 percent of 125.925
100.75 is 80 percent of 125.938
100.76 is 80 percent of 125.95
100.77 is 80 percent of 125.963
100.78 is 80 percent of 125.975
100.79 is 80 percent of 125.988
100.8 is 80 percent of 126
100.81 is 80 percent of 126.013
100.82 is 80 percent of 126.025
100.83 is 80 percent of 126.038
100.84 is 80 percent of 126.05
100.85 is 80 percent of 126.063
100.86 is 80 percent of 126.075
100.87 is 80 percent of 126.088
100.88 is 80 percent of 126.1
100.89 is 80 percent of 126.113
100.9 is 80 percent of 126.125
100.91 is 80 percent of 126.138
100.92 is 80 percent of 126.15
100.93 is 80 percent of 126.163
100.94 is 80 percent of 126.175
100.95 is 80 percent of 126.188
100.96 is 80 percent of 126.2
100.97 is 80 percent of 126.213
100.98 is 80 percent of 126.225
100.99 is 80 percent of 126.238