With percent questions the best way to do it is to use the formula %/100 = is/of. I teach my students this and it works every time.

Your question "What percent of 3.8 is 38?" will fit right into the formula. ** %** is the unknown, so it goes in the formula as *x*. **Of** is the number 3.8, and **is** will be 38. Fill these into the formula, cross multiply and solve for *x*.

x/100 = 38/3.8 (cross multipy)

3.8x = 3800 (divide both sides by 3.8 to get x alone)

3.8x/**3.8** = 3800/**3.8**

x = 1000%

This makes sence because 3.8 is much smaller than 38, so it makes sence that 38 is 1000% higher than 3.8. Hope this helps. :)

If 3.8 represents 100%, 38 represents ten times that amount, or 1000%. A general method of solving these kinds of problems is to set up a ratio. Three point eight is to a hundred as 38 is to x, and solve for the unknown:

1) 3.8/100 = 38/x

2) 3800 = 3.8x

3) 1000 = x

**Question:-**

What percent of 3.8 is 38?

**Solution:-**

Now easy way for solving this is to turn it into an equation form. like this,

Since we want to calculate the percent so lets take 'a' in its place;

a/100 of 38 = 3.8

a/100 x 38 = 3.8

a/100 = 3.8/38

a/100 = 0.1

a = 0.1 x 100

a = 10

Hence the answer is 10%

To check;

According to the answer;

10% of 38 is 3.8

Hence;

10/100 x 38

= 380/100

=38/10

=3.8

Hence Proved....

**What percent of 3.8 is 38?**

let x be the percent,

x% of 38 = 3.8

x% * 38 = 3.8

x% = 3.8/38

x% = 0.1

x/100 = 0.1

x= 0.1*100

*x= 10%*

What percent of 3.8 is 38?

Of signifies multiplication. The "what percent" can be written as x/100 This problem can be set up as

`(x)/(100) xx 3.8 = 38`

Now we can solve for x:

`x = (38)/(3.8) xx 100`

x = 1000

This means 1000% of 3.8 is 38. We know the percent had to be greater than 1 since 38 is greater than 3.8.

What percent of 3.8 is 38?

cross multiply

x/100 = 38/3.8

3.8x = 3800

divide by 3.8

x = 1000

percentage= worked-out value/ used value * 100%

=38/3.8x100%

= 10 x 100%

= 1000%