Question: 15 is 30 percent of what number

Answer: 15 is 30 percent of 50

Step by step solution for calculating 15 is 30 percent of what number

We already have our first value 15 and the second value 30. 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 15 = 30% × Y

STEP 2 15 = 30/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 30 we will arrive at:

STEP 3 Y = 15 × 100/30

STEP 4 Y = 15 × 100 ÷ 30

STEP 5 Y = 50

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

You can easily calculate 15 is 30 percent of what number by using any regular calculator, simply enter 15 × 100 ÷ 30 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 30 percent of the marbles are red. If there are 15 red marbles. How many marbles does he have altogether?

Answer: 50 marbles.

How To: In this problem, we know that the Percent is 30, and we are also told that the Part of the marbles is red, so we know that the Part is 15.

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 15.

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

15 × 100 = 1500

In step two, we take that 1500 and divide it by the "Percent", which we are told is 30.

So, 1500 divided by 30 = 50

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


Question: A high school marching band has 15 flute players, If 30 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 15 since there are 15 flute players and we are told that they make up 30 percent of the band, so the "Percent" is 30.

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.

15 × 100 = 1500

For step two, we divide that 1500 by the "Percent", which is 30.

1500 divided by 30 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 = 30% / 15

Drop the percentage marks to simplify your calculations: 100 / Y = 30 / 15

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 30 / 15 ) Y

Simplifying the right side, we get: 100 = 30 Y

Dividing both sides of the equation by 30, we will arrive at 50 = Y

This leaves us with our final answer: 15 is 30 percent of 50

Percentage Table

15 is 30 percent of 50
15.01 is 30 percent of 50.033
15.02 is 30 percent of 50.067
15.03 is 30 percent of 50.1
15.04 is 30 percent of 50.133
15.05 is 30 percent of 50.167
15.06 is 30 percent of 50.2
15.07 is 30 percent of 50.233
15.08 is 30 percent of 50.267
15.09 is 30 percent of 50.3
15.1 is 30 percent of 50.333
15.11 is 30 percent of 50.367
15.12 is 30 percent of 50.4
15.13 is 30 percent of 50.433
15.14 is 30 percent of 50.467
15.15 is 30 percent of 50.5
15.16 is 30 percent of 50.533
15.17 is 30 percent of 50.567
15.18 is 30 percent of 50.6
15.19 is 30 percent of 50.633
15.2 is 30 percent of 50.667
15.21 is 30 percent of 50.7
15.22 is 30 percent of 50.733
15.23 is 30 percent of 50.767
15.24 is 30 percent of 50.8
15.25 is 30 percent of 50.833
15.26 is 30 percent of 50.867
15.27 is 30 percent of 50.9
15.28 is 30 percent of 50.933
15.29 is 30 percent of 50.967
15.3 is 30 percent of 51
15.31 is 30 percent of 51.033
15.32 is 30 percent of 51.067
15.33 is 30 percent of 51.1
15.34 is 30 percent of 51.133
15.35 is 30 percent of 51.167
15.36 is 30 percent of 51.2
15.37 is 30 percent of 51.233
15.38 is 30 percent of 51.267
15.39 is 30 percent of 51.3
15.4 is 30 percent of 51.333
15.41 is 30 percent of 51.367
15.42 is 30 percent of 51.4
15.43 is 30 percent of 51.433
15.44 is 30 percent of 51.467
15.45 is 30 percent of 51.5
15.46 is 30 percent of 51.533
15.47 is 30 percent of 51.567
15.48 is 30 percent of 51.6
15.49 is 30 percent of 51.633
15.5 is 30 percent of 51.667
15.51 is 30 percent of 51.7
15.52 is 30 percent of 51.733
15.53 is 30 percent of 51.767
15.54 is 30 percent of 51.8
15.55 is 30 percent of 51.833
15.56 is 30 percent of 51.867
15.57 is 30 percent of 51.9
15.58 is 30 percent of 51.933
15.59 is 30 percent of 51.967
15.6 is 30 percent of 52
15.61 is 30 percent of 52.033
15.62 is 30 percent of 52.067
15.63 is 30 percent of 52.1
15.64 is 30 percent of 52.133
15.65 is 30 percent of 52.167
15.66 is 30 percent of 52.2
15.67 is 30 percent of 52.233
15.68 is 30 percent of 52.267
15.69 is 30 percent of 52.3
15.7 is 30 percent of 52.333
15.71 is 30 percent of 52.367
15.72 is 30 percent of 52.4
15.73 is 30 percent of 52.433
15.74 is 30 percent of 52.467
15.75 is 30 percent of 52.5
15.76 is 30 percent of 52.533
15.77 is 30 percent of 52.567
15.78 is 30 percent of 52.6
15.79 is 30 percent of 52.633
15.8 is 30 percent of 52.667
15.81 is 30 percent of 52.7
15.82 is 30 percent of 52.733
15.83 is 30 percent of 52.767
15.84 is 30 percent of 52.8
15.85 is 30 percent of 52.833
15.86 is 30 percent of 52.867
15.87 is 30 percent of 52.9
15.88 is 30 percent of 52.933
15.89 is 30 percent of 52.967
15.9 is 30 percent of 53
15.91 is 30 percent of 53.033
15.92 is 30 percent of 53.067
15.93 is 30 percent of 53.1
15.94 is 30 percent of 53.133
15.95 is 30 percent of 53.167
15.96 is 30 percent of 53.2
15.97 is 30 percent of 53.233
15.98 is 30 percent of 53.267
15.99 is 30 percent of 53.3