Question: 28 is 70 percent of what number

Answer: 28 is 70 percent of 40

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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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