The CD is 30/100 * 20 = $<<30/100*20=6>>6 cheaper than the album.

So the cost of the CD is 20 - 6 = $<<20-6=14>>14.

The book is $4 more expensive than the CD, which means it cost 14 + 4 = $<<14+4=18>>18.

# Answer

18
Question:
A book costs $4 more than a CD. The CD is 30% cheaper than a $20 album. How much does the book cost?
Answer:
Let's think step by step.

user
18
A book costs $4 more than a CD. The CD is 30% cheaper than a $20 album. How much does the book cost?
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