Step by action solution because that calculating 15 is 30 percent the what number

We already have our an initial value 15 and also the second value 30. Let"s i think the unknown value is Y i beg your pardon answer us will uncover out.

You are watching: 15 is 30% of what number

As we have actually all the forced values we need, now we can put lock in a basic mathematical formula as below:

STEP 1 15 = 30% × Y

STEP 2 15 = 30/100× Y

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

STEP 3 Y = 15 × 100/30

STEP 4 Y = 15 × 100 ÷ 30

STEP 5 Y = 50

Finally, we have uncovered the worth of Y which is 50 and that is our answer.

You can easily calculate 15 is 30 percent the what number by using any type of regular calculator, simply enter 15 × 100 ÷ 30 and you will gain your answer i beg your pardon is 50

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Sample questions, answers, and how to

Question: her friend has actually a bag that marbles, and he speak you the 30 percent of the marbles room red. If there space 15 red marbles. How countless marbles go he have altogether?

Answer: 50 marbles.

How To: In this problem, we recognize that the Percent is 30, and we are likewise told that the part of the marbles is red, for this reason we understand that the component is 15.

So, that method that it must be the total that"s missing. Right here is the way to figure out what the complete is:

Part/Total = Percent/100

By using a straightforward algebra we have the right to re-arrange ours Percent equation prefer this:

Part × 100/Percent = Total

If us take the "Part" and multiply it by 100, and also then we divide that by the "Percent", we will get the "Total".

Let"s shot it out on our problem around the marbles, that"s very simple and it"s just two steps! We recognize that the "Part" (red marbles) is 15.

So action one is to simply multiply that component by 100.

15 × 100 = 1500

In step two, us take that 1500 and divide the by the "Percent", i m sorry we space told is 30.

So, 1500 divided by 30 = 50

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

Question: A high school marching band has 15 flute players, If 30 percent of the tape members play the flute, then how numerous members space in the band?

Answer: There space 50 members in the band.

How To: The smaller "Part" in this trouble is 15 since there are 15 flute players and also we space told that they consist of 30 percent the the band, for this reason the "Percent" is 30.

Again, it"s the "Total" that"s absent here, and to uncover it, we simply need to follow our 2 step procedure as the ahead problem.

For step one, us multiply the "Part" by 100.

15 × 100 = 1500

For step two, we divide that 1500 through the "Percent", i m sorry is 30.

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1500 divided by 30 equals 50

That means that the total variety of band members is 50.

Have time and also want to discover the calculation?

Let"s assume the unknown value is Y

First creating it as: 100% / Y = 30% / 15

Drop the portion marks to leveling your calculations: 100 / Y = 30 / 15

Multiply both political parties by Y to move Y ~ above the appropriate side of the equation: 100 = ( 30 / 15 ) Y