# Question: What is 10 percent of 400? (what is 10% of 400)

### How to calculate 10% of 400

10 percent × 400

= (10 ÷ 100) × 400

= (10 × 400) ÷ 100

= 4000 ÷ 100

= 40

Now we have: 10% of 400 = 40

## The fastest step by step guide for calculating what is 10 percent of 400

We already have our first value 10 and the second value 400. 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 Y = 10/100

STEP 2 Y = 10/100 × 400

STEP 3 Y = 10 ÷ 100 × 400

STEP 4 Y = 40

Finally, we have found the value of Y which is 40 and that is our answer. If you want to use a calculator to know what is 10 percent of 400, simply enter 10 ÷ 100 × 400 and you will get your answer which is 40 Here is a calculator to solve percentage calculations such as what is 10% of 400. 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.

What is% of

Question: At a high school 10 percent of seniors went on a mission trip. There were 400 seniors. How many seniors went on the trip?

Answer: 40 seniors went on the trip.

Question: 10 percent of the children in kindergarten like Thomas the Train. If there are 400 kids in kindergarten, how many of them like Thomas?

Answer: 40 kids like Thomas the Train.

## Another step by step method

Step 1: Let's solve the equation for Y by first rewriting it as: 100% / 400 = 10% / Y

Step 2: Drop the percentage marks to simplify your calculations: 100 / 400 = 10 / Y

Step 3: Multiply both sides by Y to transfer it on the left side of the equation: Y ( 100 / 400 ) = 10

Step 4: To isolate Y, multiply both sides by 400 / 100, we will have: Y = 10 ( 400 / 100 )

Step 5: Computing the right side, we get: Y = 40

This leaves us with our final answer: 10% of 400 is 40