Question
Mark is 3 years older than z. If Mark is currently 10 years old, write an equation to find z.
Answers
GPT-4o mini
To find the age of z, you can represent the relationship between Mark and z with the following equation:
Let \( z \) be the age of z.
Since Mark is 3 years older than z, you can express this relationship as:
\[
\text{Mark's age} = z + 3
\]
Given that Mark is currently 10 years old, you can substitute 10 for Mark's age:
\[
10 = z + 3
\]
Now, to find z, you'll solve this equation.
Subtract 3 from both sides:
\[
10 - 3 = z
\]
\[
7 = z
\]
Therefore, z is currently 7 years old.
Let \( z \) be the age of z.
Since Mark is 3 years older than z, you can express this relationship as:
\[
\text{Mark's age} = z + 3
\]
Given that Mark is currently 10 years old, you can substitute 10 for Mark's age:
\[
10 = z + 3
\]
Now, to find z, you'll solve this equation.
Subtract 3 from both sides:
\[
10 - 3 = z
\]
\[
7 = z
\]
Therefore, z is currently 7 years old.