What Divided by 3 Equals 30?
Methods
Setting up the problem:
In a problem like this, the “what” means that we’re working with a variable. The most common variable used in math is “x”. So, we could say what number, x, when divided by 3, equals 30?
Solving What Divided by 3 Equals 30
Here’s how you would set up this question as an equation:
x
3
=
30
\frac{x}{3} = 30
3 x = 30
The goal of the problem is to solve for x. To do this we need to change the equation so that x is alone on one side of the equation.In this case, we can do that by multiplying both sides of the equation by 3, resulting in this equation:
x
=
30
∗
3
x = 30*3
x = 30 ∗ 3
Then we simplify and find our answer:
x
=
90
x = 90
x = 90
So, the answer to the question “What divided by 3 equals 30?” is 90.To prove this, we can take the original problem:
x
3
=
30
\frac{x}{3} = 30
3 x = 30
And insert 90 in the place of x:
90
3
=
30
\frac{90}{3} = 30
3 90 = 30
Because this is true, the answer must be correct.
Practice Other Division Problems Like This One
If this problem was a little difficult or you want to practice your skills on another one, give it a go on any one of these too!
What divided by 85 equals 77?
49 divided by what equals 62?
What is 7/18 divided by 64?
What is 13/14 divided by 12/19?
What is 86 divided by 17/2?