Question: 40 is 30 percent of what number

Answer: 40 is 30 percent of 133.333

Step by step solution for calculating 40 is 30 percent of what number

We already have our first value 40 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 40 = 30% × Y

STEP 2 40 = 30/100× Y

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

STEP 3 Y = 40 × 100/30

STEP 4 Y = 40 × 100 ÷ 30

STEP 5 Y = 133.333

Finally, we have found the value of Y which is 133.333 and that is our answer.

You can easily calculate 40 is 30 percent of what number by using any regular calculator, simply enter 40 × 100 ÷ 30 and you will get your answer which is 133.333

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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 40 red marbles. How many marbles does he have altogether?

Answer: 133.333 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 40.

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 40.

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

40 × 100 = 4000

In step two, we take that 4000 and divide it by the "Percent", which we are told is 30.

So, 4000 divided by 30 = 133.333

And that means that the total number of marbles is 133.333.


Question: A high school marching band has 40 flute players, If 30 percent of the band members play the flute, then how many members are in the band?

Answer: There are 133.333 members in the band.

How To: The smaller "Part" in this problem is 40 since there are 40 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.

40 × 100 = 4000

For step two, we divide that 4000 by the "Percent", which is 30.

4000 divided by 30 equals 133.333

That means that the total number of band members is 133.333.

Have time and want to learn the calculation?

Let's assume the unknown value is Y

First writing it as: 100% / Y = 30% / 40

Drop the percentage marks to simplify your calculations: 100 / Y = 30 / 40

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 30 / 40 ) Y

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

Dividing both sides of the equation by 30, we will arrive at 133.333 = Y

This leaves us with our final answer: 40 is 30 percent of 133.333

Percentage Table

40 is 30 percent of 133.333
40.01 is 30 percent of 133.367
40.02 is 30 percent of 133.4
40.03 is 30 percent of 133.433
40.04 is 30 percent of 133.467
40.05 is 30 percent of 133.5
40.06 is 30 percent of 133.533
40.07 is 30 percent of 133.567
40.08 is 30 percent of 133.6
40.09 is 30 percent of 133.633
40.1 is 30 percent of 133.667
40.11 is 30 percent of 133.7
40.12 is 30 percent of 133.733
40.13 is 30 percent of 133.767
40.14 is 30 percent of 133.8
40.15 is 30 percent of 133.833
40.16 is 30 percent of 133.867
40.17 is 30 percent of 133.9
40.18 is 30 percent of 133.933
40.19 is 30 percent of 133.967
40.2 is 30 percent of 134
40.21 is 30 percent of 134.033
40.22 is 30 percent of 134.067
40.23 is 30 percent of 134.1
40.24 is 30 percent of 134.133
40.25 is 30 percent of 134.167
40.26 is 30 percent of 134.2
40.27 is 30 percent of 134.233
40.28 is 30 percent of 134.267
40.29 is 30 percent of 134.3
40.3 is 30 percent of 134.333
40.31 is 30 percent of 134.367
40.32 is 30 percent of 134.4
40.33 is 30 percent of 134.433
40.34 is 30 percent of 134.467
40.35 is 30 percent of 134.5
40.36 is 30 percent of 134.533
40.37 is 30 percent of 134.567
40.38 is 30 percent of 134.6
40.39 is 30 percent of 134.633
40.4 is 30 percent of 134.667
40.41 is 30 percent of 134.7
40.42 is 30 percent of 134.733
40.43 is 30 percent of 134.767
40.44 is 30 percent of 134.8
40.45 is 30 percent of 134.833
40.46 is 30 percent of 134.867
40.47 is 30 percent of 134.9
40.48 is 30 percent of 134.933
40.49 is 30 percent of 134.967
40.5 is 30 percent of 135
40.51 is 30 percent of 135.033
40.52 is 30 percent of 135.067
40.53 is 30 percent of 135.1
40.54 is 30 percent of 135.133
40.55 is 30 percent of 135.167
40.56 is 30 percent of 135.2
40.57 is 30 percent of 135.233
40.58 is 30 percent of 135.267
40.59 is 30 percent of 135.3
40.6 is 30 percent of 135.333
40.61 is 30 percent of 135.367
40.62 is 30 percent of 135.4
40.63 is 30 percent of 135.433
40.64 is 30 percent of 135.467
40.65 is 30 percent of 135.5
40.66 is 30 percent of 135.533
40.67 is 30 percent of 135.567
40.68 is 30 percent of 135.6
40.69 is 30 percent of 135.633
40.7 is 30 percent of 135.667
40.71 is 30 percent of 135.7
40.72 is 30 percent of 135.733
40.73 is 30 percent of 135.767
40.74 is 30 percent of 135.8
40.75 is 30 percent of 135.833
40.76 is 30 percent of 135.867
40.77 is 30 percent of 135.9
40.78 is 30 percent of 135.933
40.79 is 30 percent of 135.967
40.8 is 30 percent of 136
40.81 is 30 percent of 136.033
40.82 is 30 percent of 136.067
40.83 is 30 percent of 136.1
40.84 is 30 percent of 136.133
40.85 is 30 percent of 136.167
40.86 is 30 percent of 136.2
40.87 is 30 percent of 136.233
40.88 is 30 percent of 136.267
40.89 is 30 percent of 136.3
40.9 is 30 percent of 136.333
40.91 is 30 percent of 136.367
40.92 is 30 percent of 136.4
40.93 is 30 percent of 136.433
40.94 is 30 percent of 136.467
40.95 is 30 percent of 136.5
40.96 is 30 percent of 136.533
40.97 is 30 percent of 136.567
40.98 is 30 percent of 136.6
40.99 is 30 percent of 136.633