When 4 times a number is subtracted from 7 times the number, the result is 30.

which one is correct?

{3, -15, 10, or 0.9

7 n - 4 n = 30

3 n = 30
n = 10

let the number be a 7a-150=0 ; 7a=150 divide by coefficient of a 7a/7=150/7 a=21.4

To find the correct answer, let's solve the equation given:

Let's assume the number is represented by "x".

According to the problem, 7 times the number minus 4 times the number equals 30. This can be written as:

7x - 4x = 30

Simplifying the equation, we get:

3x = 30

Now, we can solve for x by dividing both sides of the equation by 3:

x = 30/3

x = 10

Therefore, the correct answer is 10.

To solve this problem, we can set up an equation with the given information and solve for the unknown number. Let's call the number "x".

The given information states that "When 4 times a number is subtracted from 7 times the number, the result is 30." We can represent this in an equation as:

7x - 4x = 30

Simplifying the equation:

3x = 30

Now, we can solve for x by dividing both sides of the equation by 3:

x = 30/3

Simplifying further:

x = 10

Therefore, the correct answer is 10.