# Question: 28 is 70 percent of what number

## Step by step solution for calculating 28 is 70 percent of what number

We already have our first value 28 and the second value 70. 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 28 = 70% × Y

STEP 2 28 = 70/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 70 we will arrive at:

STEP 3 Y = 28 × 100/70

STEP 4 Y = 28 × 100 ÷ 70

STEP 5 Y = 40

Finally, we have found the value of Y which is 40 and that is our answer.

You can easily calculate 28 is 70 percent of what number by using any regular calculator, simply enter 28 × 100 ÷ 70 and you will get your answer which is 40

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percent of what number

## Sample questions, answers, and how to

Question: Your friend has a bag of marbles, and he tells you that 70 percent of the marbles are red. If there are 28 red marbles. How many marbles does he have altogether?

Answer: 40 marbles.

How To: In this problem, we know that the Percent is 70, and we are also told that the Part of the marbles is red, so we know that the Part is 28.

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 28.

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

28 × 100 = 2800

In step two, we take that 2800 and divide it by the "Percent", which we are told is 70.

So, 2800 divided by 70 = 40

And that means that the total number of marbles is 40.

Question: A high school marching band has 28 flute players, If 70 percent of the band members play the flute, then how many members are in the band?

Answer: There are 40 members in the band.

How To: The smaller "Part" in this problem is 28 since there are 28 flute players and we are told that they make up 70 percent of the band, so the "Percent" is 70.

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.

28 × 100 = 2800

For step two, we divide that 2800 by the "Percent", which is 70.

2800 divided by 70 equals 40

That means that the total number of band members is 40.

## Have time and want to learn the calculation?

Let's assume the unknown value is Y

First writing it as: 100% / Y = 70% / 28

Drop the percentage marks to simplify your calculations: 100 / Y = 70 / 28

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 70 / 28 ) Y

Simplifying the right side, we get: 100 = 70 Y

Dividing both sides of the equation by 70, we will arrive at 40 = Y

This leaves us with our final answer: 28 is 70 percent of 40

## Percentage Table

 28 is 70 percent of 40 28.01 is 70 percent of 40.014 28.02 is 70 percent of 40.029 28.03 is 70 percent of 40.043 28.04 is 70 percent of 40.057 28.05 is 70 percent of 40.071 28.06 is 70 percent of 40.086 28.07 is 70 percent of 40.1 28.08 is 70 percent of 40.114 28.09 is 70 percent of 40.129 28.1 is 70 percent of 40.143 28.11 is 70 percent of 40.157 28.12 is 70 percent of 40.171 28.13 is 70 percent of 40.186 28.14 is 70 percent of 40.2 28.15 is 70 percent of 40.214 28.16 is 70 percent of 40.229 28.17 is 70 percent of 40.243 28.18 is 70 percent of 40.257 28.19 is 70 percent of 40.271
 28.2 is 70 percent of 40.286 28.21 is 70 percent of 40.3 28.22 is 70 percent of 40.314 28.23 is 70 percent of 40.329 28.24 is 70 percent of 40.343 28.25 is 70 percent of 40.357 28.26 is 70 percent of 40.371 28.27 is 70 percent of 40.386 28.28 is 70 percent of 40.4 28.29 is 70 percent of 40.414 28.3 is 70 percent of 40.429 28.31 is 70 percent of 40.443 28.32 is 70 percent of 40.457 28.33 is 70 percent of 40.471 28.34 is 70 percent of 40.486 28.35 is 70 percent of 40.5 28.36 is 70 percent of 40.514 28.37 is 70 percent of 40.529 28.38 is 70 percent of 40.543 28.39 is 70 percent of 40.557
 28.4 is 70 percent of 40.571 28.41 is 70 percent of 40.586 28.42 is 70 percent of 40.6 28.43 is 70 percent of 40.614 28.44 is 70 percent of 40.629 28.45 is 70 percent of 40.643 28.46 is 70 percent of 40.657 28.47 is 70 percent of 40.671 28.48 is 70 percent of 40.686 28.49 is 70 percent of 40.7 28.5 is 70 percent of 40.714 28.51 is 70 percent of 40.729 28.52 is 70 percent of 40.743 28.53 is 70 percent of 40.757 28.54 is 70 percent of 40.771 28.55 is 70 percent of 40.786 28.56 is 70 percent of 40.8 28.57 is 70 percent of 40.814 28.58 is 70 percent of 40.829 28.59 is 70 percent of 40.843
 28.6 is 70 percent of 40.857 28.61 is 70 percent of 40.871 28.62 is 70 percent of 40.886 28.63 is 70 percent of 40.9 28.64 is 70 percent of 40.914 28.65 is 70 percent of 40.929 28.66 is 70 percent of 40.943 28.67 is 70 percent of 40.957 28.68 is 70 percent of 40.971 28.69 is 70 percent of 40.986 28.7 is 70 percent of 41 28.71 is 70 percent of 41.014 28.72 is 70 percent of 41.029 28.73 is 70 percent of 41.043 28.74 is 70 percent of 41.057 28.75 is 70 percent of 41.071 28.76 is 70 percent of 41.086 28.77 is 70 percent of 41.1 28.78 is 70 percent of 41.114 28.79 is 70 percent of 41.129
 28.8 is 70 percent of 41.143 28.81 is 70 percent of 41.157 28.82 is 70 percent of 41.171 28.83 is 70 percent of 41.186 28.84 is 70 percent of 41.2 28.85 is 70 percent of 41.214 28.86 is 70 percent of 41.229 28.87 is 70 percent of 41.243 28.88 is 70 percent of 41.257 28.89 is 70 percent of 41.271 28.9 is 70 percent of 41.286 28.91 is 70 percent of 41.3 28.92 is 70 percent of 41.314 28.93 is 70 percent of 41.329 28.94 is 70 percent of 41.343 28.95 is 70 percent of 41.357 28.96 is 70 percent of 41.371 28.97 is 70 percent of 41.386 28.98 is 70 percent of 41.4 28.99 is 70 percent of 41.414