In Henry's collection of music CDs, he has 3 more country CDs than rock CDs but twice as many rock CDs as classical CDs. If he has 23 country CDs, how many classical CDs make up his collection?
Henry has 23-3=<<23-3=20>>20 rock CDs.
Henry has 20/2=<<20/2=10>>10 classical CDs.
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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:

A department store displays a 20% discount on all fixtures. What will be the new price of a 25 cm high bedside lamp that was worth $120?The amount of the discount is $120 x 0.2 = $<<120*0.2=24>>24.
The new price will be $120 – $24 = $<<120-24=96>>96.
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Roberto is raising chickens for eggs. He buys 4 chickens for $20 each. They cost $1 in total a week to feed and each produces 3 eggs a week that will last forever. He used to buy 1 dozen eggs a week and spent $2 per dozen. After how many weeks will the chickens be cheaper than buying his eggs?The chickens cost $80 because 4 x 20 = <<4*20=80>>80
His chickens produce a dozen eggs a week because 4 x 3 = <<4*3=12>>12
Each week that he has chickens is $1 cheaper than buying eggs because 2 - 1 = <<2-1=1>>1
After 80 weeks his chickens will be paid off because 80 / 1 = <<80/1=80>>80
After 81 weeks the chickens will be cheaper than buying eggs because 80 + 1 = <<80+1=81>>81
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Now, solve this next question in the style of the above examples:

In Henry's collection of music CDs, he has 3 more country CDs than rock CDs but twice as many rock CDs as classical CDs. If he has 23 country CDs, how many classical CDs make up his collection?

### Response:
Henry has 23-3=<<23-3=20>>20 rock CDs.
Henry has 20/2=<<20/2=10>>10 classical CDs.
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