20% of num is x. the num is 4 more than x . what's the number.
20% of num is x. the num is 4 more than x.
x = .2 num
so
num = 4 + .2 num
.8 num = 4
num = 4/.8
how to subtract fractions from mixed NUMBERS
To find the number, we need to set up an equation using the given information.
Let's assume the number is represented by 'N' and x is given as a fraction of N (20%),
x = 0.2N.
The problem also states that the number, N, is 4 more than x. So, we can write another equation as,
N = x + 4.
Now, let's substitute the value of x from the first equation into the second equation,
N = 0.2N + 4.
To solve for N, we need to isolate N on one side of the equation. Let's move 0.2N to the left side of the equation,
N - 0.2N = 4.
Simplifying the left side:
0.8N = 4.
Now, divide both sides of the equation by 0.8:
N = 4 / 0.8.
Evaluating the right side of the equation:
N = 5.
Therefore, the number is 5.