Jenny is older than Charlie by five years, while Charlie is older than Bobby by three years. How old will Charlie be when Jenny becomes twice as old as Bobby?
Jenny is older than Charlie by 5 years who is older than Bobby by 3 years, so Jenny is older than Bobby by 5+3 = <<8=8>>8 years
Jenny will be twice as old as Bobby when he is 8*2 = 16 years old
Jenny is 5 years older than Charlie so when Jenny is 16, Charlie will be 16-5 = 11 years old
#### 11
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
You are solving math problems. Here are some examples of how to solve the task:

The sum of the ages of three boys is 29. If two of the boys are the same age and the third boy is 11 years old, how old are the other two boys?The third boy is 11 so the sum of the ages of the first two is 29-11 = <<29-11=18>>18
The ages of the first two boys are equal so each of them is 18/2 = <<18/2=9>>9 years
#### 9[END]

Gwen received a $900 bonus at work and decided to invest this money in the stock market.  She spent one-third of her bonus on stock A, one-third on stock B, and the remaining one-third on stock C.   After one year, stock A and stock B had doubled in value, while stock C had lost half of its value.  At the end of the year, how much were Gwen's stocks worth, in dollars?One-third of her bonus was $900/3 = $<<900/3=300>>300.
After one year, stock A doubled in value and was worth $300*2 = $<<300*2=600>>600.
After one year, stock B doubled in value and was worth $300*2 = $<<300*2=600>>600.
After one year, stock C had lost half its value and was worth $300/2 = $<<300/2=150>>150.
Altogether, at the end of the year, Gwen's stocks were worth $600+$600+$150 = $<<600+600+150=1350>>1350
#### 1350[END]

Now, solve this next question in the style of the above examples:

Jenny is older than Charlie by five years, while Charlie is older than Bobby by three years. How old will Charlie be when Jenny becomes twice as old as Bobby?

### Response:
Jenny is older than Charlie by 5 years who is older than Bobby by 3 years, so Jenny is older than Bobby by 5+3 = <<8=8>>8 years
Jenny will be twice as old as Bobby when he is 8*2 = 16 years old
Jenny is 5 years older than Charlie so when Jenny is 16, Charlie will be 16-5 = 11 years old
#### 11