Step by action solution because that calculating 18 is 45 percent the what number

We already have our an initial value 18 and also the 2nd value 45. Let"s i think the unknown worth is Y i m sorry answer us will find out.

You are watching: 18 is 45 of what number

As we have actually all the forced values we need, currently we have the right to put lock in a straightforward mathematical formula together below:

STEP 118 = 45% × Y

STEP 218 = 45/100× Y

Multiplying both sides by 100 and also dividing both sides of the equation through 45 we will certainly arrive at:

STEP 3Y = 18 × 100/45

STEP 4Y = 18 × 100 ÷ 45

STEP 5Y = 40

Finally, us have found the value of Y which is 40 and that is our answer.

You can quickly calculate 18 is 45 percent the what number through using any regular calculator, simply enter 18 × 100 ÷ 45 and you will obtain your answer i beg your pardon is 40


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Sample questions, answers, and also how to

Question: your friend has a bag of marbles, and he speak you the 45 percent the the marbles space red. If there room 18 red marbles. How countless marbles does he have actually altogether?

Answer: 40 marbles.

How To: In this problem, we understand that the Percent is 45, and we are likewise told that the part of the marbles is red, for this reason we recognize that the part is 18.

So, that method that it have to be the full that"s missing. Here is the method to number out what the complete is:

Part/Total = Percent/100

By utilizing a straightforward algebra we deserve to re-arrange our Percent equation like this:

Part × 100/Percent = Total

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

Let"s shot it the end on ours problem about the marbles, that"s very an easy and it"s simply two steps! We understand that the "Part" (red marbles) is 18.

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

18 × 100 = 1800

In action two, we take the 1800 and also divide that by the "Percent", which we room told is 45.

So, 1800 separated by 45 = 40

And that means that the total variety of marbles is 40.

Question: A high college marching band has actually 18 flute players, If 45 percent that the tape members beat the flute, climate how plenty of members space in the band?

Answer: There space 40 members in the band.

How To: The smaller "Part" in this trouble is 18 because there are 18 flute players and also we room told that they comprise 45 percent of the band, for this reason the "Percent" is 45.

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

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

18 × 100 = 1800

For step two, we divide that 1800 by the "Percent", i m sorry is 45.

See more: How Many Miles Between San Francisco And Los Angeles Distance (Sfo To Lax)

1800 separated by 45 equals 40

That way that the total variety of band members is 40.

Another step by action method

Step 1: Let"s i think the unknown value is Y

Step 2: first writing it as: 100% / Y = 45% / 18

Step 3: drop the percentage marks to simplify your calculations: 100 / Y = 45 / 18

Step 4: main point both political parties by Y to relocate Y top top the right side of the equation: 100 = ( 45 / 18 ) Y

Step 5: simplifying the appropriate side, us get: 100 = 45 Y

Step 6: dividing both political parties of the equation through 45, we will certainly arrive in ~ 40 = Y

This pipeline us with our last answer: 18 is 45 percent the 40


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