Question: 72 is 90 percent of what number

Answer: 72 is 90 percent of 80

Step by step solution for calculating 72 is 90 percent of what number

We already have our first value 72 and the second value 90. 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 72 = 90% × Y

STEP 2 72 = 90/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 90 we will arrive at:

STEP 3 Y = 72 × 100/90

STEP 4 Y = 72 × 100 ÷ 90

STEP 5 Y = 80

Finally, we have found the value of Y which is 80 and that is our answer.

You can easily calculate 72 is 90 percent of what number by using any regular calculator, simply enter 72 × 100 ÷ 90 and you will get your answer which is 80

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Sample questions, answers, and how to

Question: Your friend has a bag of marbles, and he tells you that 90 percent of the marbles are red. If there are 72 red marbles. How many marbles does he have altogether?

Answer: 80 marbles.

How To: In this problem, we know that the Percent is 90, and we are also told that the Part of the marbles is red, so we know that the Part is 72.

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 72.

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

72 × 100 = 7200

In step two, we take that 7200 and divide it by the "Percent", which we are told is 90.

So, 7200 divided by 90 = 80

And that means that the total number of marbles is 80.


Question: A high school marching band has 72 flute players, If 90 percent of the band members play the flute, then how many members are in the band?

Answer: There are 80 members in the band.

How To: The smaller "Part" in this problem is 72 since there are 72 flute players and we are told that they make up 90 percent of the band, so the "Percent" is 90.

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.

72 × 100 = 7200

For step two, we divide that 7200 by the "Percent", which is 90.

7200 divided by 90 equals 80

That means that the total number of band members is 80.

Have time and want to learn the calculation?

Let's assume the unknown value is Y

First writing it as: 100% / Y = 90% / 72

Drop the percentage marks to simplify your calculations: 100 / Y = 90 / 72

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 90 / 72 ) Y

Simplifying the right side, we get: 100 = 90 Y

Dividing both sides of the equation by 90, we will arrive at 80 = Y

This leaves us with our final answer: 72 is 90 percent of 80

Percentage Table

72 is 90 percent of 80
72.01 is 90 percent of 80.011
72.02 is 90 percent of 80.022
72.03 is 90 percent of 80.033
72.04 is 90 percent of 80.044
72.05 is 90 percent of 80.056
72.06 is 90 percent of 80.067
72.07 is 90 percent of 80.078
72.08 is 90 percent of 80.089
72.09 is 90 percent of 80.1
72.1 is 90 percent of 80.111
72.11 is 90 percent of 80.122
72.12 is 90 percent of 80.133
72.13 is 90 percent of 80.144
72.14 is 90 percent of 80.156
72.15 is 90 percent of 80.167
72.16 is 90 percent of 80.178
72.17 is 90 percent of 80.189
72.18 is 90 percent of 80.2
72.19 is 90 percent of 80.211
72.2 is 90 percent of 80.222
72.21 is 90 percent of 80.233
72.22 is 90 percent of 80.244
72.23 is 90 percent of 80.256
72.24 is 90 percent of 80.267
72.25 is 90 percent of 80.278
72.26 is 90 percent of 80.289
72.27 is 90 percent of 80.3
72.28 is 90 percent of 80.311
72.29 is 90 percent of 80.322
72.3 is 90 percent of 80.333
72.31 is 90 percent of 80.344
72.32 is 90 percent of 80.356
72.33 is 90 percent of 80.367
72.34 is 90 percent of 80.378
72.35 is 90 percent of 80.389
72.36 is 90 percent of 80.4
72.37 is 90 percent of 80.411
72.38 is 90 percent of 80.422
72.39 is 90 percent of 80.433
72.4 is 90 percent of 80.444
72.41 is 90 percent of 80.456
72.42 is 90 percent of 80.467
72.43 is 90 percent of 80.478
72.44 is 90 percent of 80.489
72.45 is 90 percent of 80.5
72.46 is 90 percent of 80.511
72.47 is 90 percent of 80.522
72.48 is 90 percent of 80.533
72.49 is 90 percent of 80.544
72.5 is 90 percent of 80.556
72.51 is 90 percent of 80.567
72.52 is 90 percent of 80.578
72.53 is 90 percent of 80.589
72.54 is 90 percent of 80.6
72.55 is 90 percent of 80.611
72.56 is 90 percent of 80.622
72.57 is 90 percent of 80.633
72.58 is 90 percent of 80.644
72.59 is 90 percent of 80.656
72.6 is 90 percent of 80.667
72.61 is 90 percent of 80.678
72.62 is 90 percent of 80.689
72.63 is 90 percent of 80.7
72.64 is 90 percent of 80.711
72.65 is 90 percent of 80.722
72.66 is 90 percent of 80.733
72.67 is 90 percent of 80.744
72.68 is 90 percent of 80.756
72.69 is 90 percent of 80.767
72.7 is 90 percent of 80.778
72.71 is 90 percent of 80.789
72.72 is 90 percent of 80.8
72.73 is 90 percent of 80.811
72.74 is 90 percent of 80.822
72.75 is 90 percent of 80.833
72.76 is 90 percent of 80.844
72.77 is 90 percent of 80.856
72.78 is 90 percent of 80.867
72.79 is 90 percent of 80.878
72.8 is 90 percent of 80.889
72.81 is 90 percent of 80.9
72.82 is 90 percent of 80.911
72.83 is 90 percent of 80.922
72.84 is 90 percent of 80.933
72.85 is 90 percent of 80.944
72.86 is 90 percent of 80.956
72.87 is 90 percent of 80.967
72.88 is 90 percent of 80.978
72.89 is 90 percent of 80.989
72.9 is 90 percent of 81
72.91 is 90 percent of 81.011
72.92 is 90 percent of 81.022
72.93 is 90 percent of 81.033
72.94 is 90 percent of 81.044
72.95 is 90 percent of 81.056
72.96 is 90 percent of 81.067
72.97 is 90 percent of 81.078
72.98 is 90 percent of 81.089
72.99 is 90 percent of 81.1