Question: 45 is 90 percent of what number

Answer: 45 is 90 percent of 50

Step by step solution for calculating 45 is 90 percent of what number

We already have our first value 45 and the second value 90. 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 45 = 90% × Y

STEP 2 45 = 90/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 90 we will arrive at:

STEP 3 Y = 45 × 100/90

STEP 4 Y = 45 × 100 ÷ 90

STEP 5 Y = 50

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

You can easily calculate 45 is 90 percent of what number by using any regular calculator, simply enter 45 × 100 ÷ 90 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 90 percent of the marbles are red. If there are 45 red marbles. How many marbles does he have altogether?

Answer: 50 marbles.

How To: In this problem, we know that the Percent is 90, and we are also told that the Part of the marbles is red, so we know that the Part is 45.

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 45.

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

45 × 100 = 4500

In step two, we take that 4500 and divide it by the "Percent", which we are told is 90.

So, 4500 divided by 90 = 50

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


Question: A high school marching band has 45 flute players, If 90 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 45 since there are 45 flute players and we are told that they make up 90 percent of the band, so the "Percent" is 90.

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.

45 × 100 = 4500

For step two, we divide that 4500 by the "Percent", which is 90.

4500 divided by 90 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 = 90% / 45

Drop the percentage marks to simplify your calculations: 100 / Y = 90 / 45

Multiply both sides by Y to move Y on the right side of the equation: 100 = ( 90 / 45 ) Y

Simplifying the right side, we get: 100 = 90 Y

Dividing both sides of the equation by 90, we will arrive at 50 = Y

This leaves us with our final answer: 45 is 90 percent of 50

Percentage Table

45 is 90 percent of 50
45.01 is 90 percent of 50.011
45.02 is 90 percent of 50.022
45.03 is 90 percent of 50.033
45.04 is 90 percent of 50.044
45.05 is 90 percent of 50.056
45.06 is 90 percent of 50.067
45.07 is 90 percent of 50.078
45.08 is 90 percent of 50.089
45.09 is 90 percent of 50.1
45.1 is 90 percent of 50.111
45.11 is 90 percent of 50.122
45.12 is 90 percent of 50.133
45.13 is 90 percent of 50.144
45.14 is 90 percent of 50.156
45.15 is 90 percent of 50.167
45.16 is 90 percent of 50.178
45.17 is 90 percent of 50.189
45.18 is 90 percent of 50.2
45.19 is 90 percent of 50.211
45.2 is 90 percent of 50.222
45.21 is 90 percent of 50.233
45.22 is 90 percent of 50.244
45.23 is 90 percent of 50.256
45.24 is 90 percent of 50.267
45.25 is 90 percent of 50.278
45.26 is 90 percent of 50.289
45.27 is 90 percent of 50.3
45.28 is 90 percent of 50.311
45.29 is 90 percent of 50.322
45.3 is 90 percent of 50.333
45.31 is 90 percent of 50.344
45.32 is 90 percent of 50.356
45.33 is 90 percent of 50.367
45.34 is 90 percent of 50.378
45.35 is 90 percent of 50.389
45.36 is 90 percent of 50.4
45.37 is 90 percent of 50.411
45.38 is 90 percent of 50.422
45.39 is 90 percent of 50.433
45.4 is 90 percent of 50.444
45.41 is 90 percent of 50.456
45.42 is 90 percent of 50.467
45.43 is 90 percent of 50.478
45.44 is 90 percent of 50.489
45.45 is 90 percent of 50.5
45.46 is 90 percent of 50.511
45.47 is 90 percent of 50.522
45.48 is 90 percent of 50.533
45.49 is 90 percent of 50.544
45.5 is 90 percent of 50.556
45.51 is 90 percent of 50.567
45.52 is 90 percent of 50.578
45.53 is 90 percent of 50.589
45.54 is 90 percent of 50.6
45.55 is 90 percent of 50.611
45.56 is 90 percent of 50.622
45.57 is 90 percent of 50.633
45.58 is 90 percent of 50.644
45.59 is 90 percent of 50.656
45.6 is 90 percent of 50.667
45.61 is 90 percent of 50.678
45.62 is 90 percent of 50.689
45.63 is 90 percent of 50.7
45.64 is 90 percent of 50.711
45.65 is 90 percent of 50.722
45.66 is 90 percent of 50.733
45.67 is 90 percent of 50.744
45.68 is 90 percent of 50.756
45.69 is 90 percent of 50.767
45.7 is 90 percent of 50.778
45.71 is 90 percent of 50.789
45.72 is 90 percent of 50.8
45.73 is 90 percent of 50.811
45.74 is 90 percent of 50.822
45.75 is 90 percent of 50.833
45.76 is 90 percent of 50.844
45.77 is 90 percent of 50.856
45.78 is 90 percent of 50.867
45.79 is 90 percent of 50.878
45.8 is 90 percent of 50.889
45.81 is 90 percent of 50.9
45.82 is 90 percent of 50.911
45.83 is 90 percent of 50.922
45.84 is 90 percent of 50.933
45.85 is 90 percent of 50.944
45.86 is 90 percent of 50.956
45.87 is 90 percent of 50.967
45.88 is 90 percent of 50.978
45.89 is 90 percent of 50.989
45.9 is 90 percent of 51
45.91 is 90 percent of 51.011
45.92 is 90 percent of 51.022
45.93 is 90 percent of 51.033
45.94 is 90 percent of 51.044
45.95 is 90 percent of 51.056
45.96 is 90 percent of 51.067
45.97 is 90 percent of 51.078
45.98 is 90 percent of 51.089
45.99 is 90 percent of 51.1