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7. Ramona is 12, and her father is 38. When Ramona is half her father's age, how old
will he be?

Sagot :

Answer:

To determine when Ramona will be half her father's age, we need to set up an equation based on their ages and the passage of time.

Let \( t \) be the number of years from now until Ramona is half her father's age.

Currently, Ramona is 12 and her father is 38.

In \( t \) years, Ramona's age will be \( 12 + t \) and her father's age will be \( 38 + t \).

We need to find \( t \) such that:

\[ 12 + t = \frac{1}{2} (38 + t) \]

To solve for \( t \), follow these steps:

1. Multiply both sides by 2 to eliminate the fraction:

\[ 2(12 + t) = 38 + t \]

2. Distribute and simplify:

\[ 24 + 2t = 38 + t \]

3. Subtract \( t \) from both sides:

\[ 24 + t = 38 \]

4. Subtract 24 from both sides:

\[ t = 14 \]

So, in 14 years, Ramona will be half her father's age.

To find her father's age at that time:

\[ 38 + 14 = 52 \]

Therefore, Ramona's father will be 52 years old when Ramona is half his age.