# Question: 42 is 30 percent of what number?

## Step by step solution for calculating 42 is 30 percent of what number

We already have our first value 42 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 42 = 30% × Y

STEP 2 42 = 30/100× Y

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

STEP 3 Y = 42 × 100/30

STEP 4 Y = 42 × 100 ÷ 30

STEP 5 Y = 140

Finally, we have found the value of Y which is 140 and that is our answer. You can easily calculate 42 is 30 percent of what number by using any regular calculator, simply enter 42 × 100 ÷ 30 and you will get your answer which is 140 Here is a Percentage Calculator to solve similar calculations such as 42 is 30 percent of what number. You can solve this type of calculation with your values by entering them into the calculator's fields, and click 'Calculate' to get the result and explanation.

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

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 42.

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 42.

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

42 × 100 = 4200

In step two, we take that 4200 and divide it by the "Percent", which we are told is 30.

So, 4200 divided by 30 = 140

And that means that the total number of marbles is 140.

Question: A high school marching band has 42 flute players, If 30 percent of the band members play the flute, then how many members are in the band?

Answer: There are 140 members in the band.

How To: The smaller "Part" in this problem is 42 since there are 42 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.

42 × 100 = 4200

For step two, we divide that 4200 by the "Percent", which is 30.

4200 divided by 30 equals 140

That means that the total number of band members is 140.

## Another step by step method

Step 1: Let's assume the unknown value is Y

Step 2: First writing it as: 100% / Y = 30% / 42

Step 3: Drop the percentage marks to simplify your calculations: 100 / Y = 30 / 42

Step 4: Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 30 / 42 ) Y

Step 5: Simplifying the right side, we get: 100 = 30 Y

Step 6: Dividing both sides of the equation by 30, we will arrive at 140 = Y

This leaves us with our final answer: 42 is 30 percent of 140

## Percentage Table

 42 is 30 percent of 140 42.01 is 30 percent of 140.033 42.02 is 30 percent of 140.067 42.03 is 30 percent of 140.1 42.04 is 30 percent of 140.133 42.05 is 30 percent of 140.167 42.06 is 30 percent of 140.2 42.07 is 30 percent of 140.233 42.08 is 30 percent of 140.267 42.09 is 30 percent of 140.3 42.1 is 30 percent of 140.333 42.11 is 30 percent of 140.367 42.12 is 30 percent of 140.4 42.13 is 30 percent of 140.433 42.14 is 30 percent of 140.467 42.15 is 30 percent of 140.5 42.16 is 30 percent of 140.533 42.17 is 30 percent of 140.567 42.18 is 30 percent of 140.6 42.19 is 30 percent of 140.633
 42.2 is 30 percent of 140.667 42.21 is 30 percent of 140.7 42.22 is 30 percent of 140.733 42.23 is 30 percent of 140.767 42.24 is 30 percent of 140.8 42.25 is 30 percent of 140.833 42.26 is 30 percent of 140.867 42.27 is 30 percent of 140.9 42.28 is 30 percent of 140.933 42.29 is 30 percent of 140.967 42.3 is 30 percent of 141 42.31 is 30 percent of 141.033 42.32 is 30 percent of 141.067 42.33 is 30 percent of 141.1 42.34 is 30 percent of 141.133 42.35 is 30 percent of 141.167 42.36 is 30 percent of 141.2 42.37 is 30 percent of 141.233 42.38 is 30 percent of 141.267 42.39 is 30 percent of 141.3
 42.4 is 30 percent of 141.333 42.41 is 30 percent of 141.367 42.42 is 30 percent of 141.4 42.43 is 30 percent of 141.433 42.44 is 30 percent of 141.467 42.45 is 30 percent of 141.5 42.46 is 30 percent of 141.533 42.47 is 30 percent of 141.567 42.48 is 30 percent of 141.6 42.49 is 30 percent of 141.633 42.5 is 30 percent of 141.667 42.51 is 30 percent of 141.7 42.52 is 30 percent of 141.733 42.53 is 30 percent of 141.767 42.54 is 30 percent of 141.8 42.55 is 30 percent of 141.833 42.56 is 30 percent of 141.867 42.57 is 30 percent of 141.9 42.58 is 30 percent of 141.933 42.59 is 30 percent of 141.967
 42.6 is 30 percent of 142 42.61 is 30 percent of 142.033 42.62 is 30 percent of 142.067 42.63 is 30 percent of 142.1 42.64 is 30 percent of 142.133 42.65 is 30 percent of 142.167 42.66 is 30 percent of 142.2 42.67 is 30 percent of 142.233 42.68 is 30 percent of 142.267 42.69 is 30 percent of 142.3 42.7 is 30 percent of 142.333 42.71 is 30 percent of 142.367 42.72 is 30 percent of 142.4 42.73 is 30 percent of 142.433 42.74 is 30 percent of 142.467 42.75 is 30 percent of 142.5 42.76 is 30 percent of 142.533 42.77 is 30 percent of 142.567 42.78 is 30 percent of 142.6 42.79 is 30 percent of 142.633
 42.8 is 30 percent of 142.667 42.81 is 30 percent of 142.7 42.82 is 30 percent of 142.733 42.83 is 30 percent of 142.767 42.84 is 30 percent of 142.8 42.85 is 30 percent of 142.833 42.86 is 30 percent of 142.867 42.87 is 30 percent of 142.9 42.88 is 30 percent of 142.933 42.89 is 30 percent of 142.967 42.9 is 30 percent of 143 42.91 is 30 percent of 143.033 42.92 is 30 percent of 143.067 42.93 is 30 percent of 143.1 42.94 is 30 percent of 143.133 42.95 is 30 percent of 143.167 42.96 is 30 percent of 143.2 42.97 is 30 percent of 143.233 42.98 is 30 percent of 143.267 42.99 is 30 percent of 143.3