Charlie's age is equal to 3 times her age in 3 years time minus 3 times her age 3 years ago. How old is Charlie?
C=3(C*3-3(C-3))
C=3(3c-3c+9)=27
18
To find Charlie's age, we can start by assigning a variable to her current age. Let's say x represents her current age.
According to the given information, Charlie's age in 3 years will be 3 times her current age plus 3 years, which can be written as: 3(x + 3).
Similarly, Charlie's age 3 years ago will be 3 times her current age minus 3 years, which can be expressed as: 3(x - 3).
Given that her current age is equal to 3 times her age in 3 years time minus 3 times her age 3 years ago, we can set up the equation as follows:
x = 3(x + 3) - 3(x - 3)
Now, let's simplify the equation:
x = 3x + 9 - 3x + 9
Combining like terms, we have:
x = 6
So, Charlie is 6 years old.