The Charles current age is 10 years old, if in 20 years Charles will be three times as old as he is now.
<h3>What is a linear equation?</h3>
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:
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Answer:
which are selectable. it should equal 563.76
Where is the table how are u supposed to answer
Answer:
85
Step-by-step explanation:
Reading through the problem we have <em>3 is</em>, that's <em>3 equals</em>, <em>what percent</em>, <em>x/100</em>, <em>of 600</em>, <em>times 600</em>.
Notice that for <em>what percent</em> I put <em>X</em>/100. The reason I did this is because the word percent means over 100 and since we don't know what percent we're dealing with yet, we can put a variable there as a placeholder.
So we have 3 = <em>X</em>/100 · 600.
Now cross-canceling the 600 and 100 to 6 and 1, we have 3 = 6x/1.
Multiply both sides by 1 to get rid of the fraction and we have 3 = 6x.
Dividing both sides by 2, we find that 0.5 = x.
So <em>3 is 0.5% of 600</em>.