The Charles current age is 10 years old, if in 20 years Charles will be three times as old as he is now.
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have:
In 20 years, Charles will be three times as old as he is now.
Let's suppose the current age of Charles is x years
Then, according to the problem, we can frame a linear equation in one variable:
x + 20 = 3x
2x = 20
x = 10 years
Thus, the Charles current age is 10 years old if in 20 years Charles will be three times as old as he is now.
Learn more about the linear equation here:
brainly.com/question/11897796
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