SOLUTION: Larry has 66 music CDs. He has 2 times as many rock CDs as country CDs. He has 3 times as many rock CDs as hip-hop CDs. How many rock CDs does Larry have? Please show me the step

Question 596187: Larry has 66 music CDs. He has 2 times as many rock CDs as country CDs. He has
3 times as many rock CDs as hip-hop CDs.
How many rock CDs does Larry have? Please show me the steps.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of country CD's
Let = number of rock CD's

= number of hip-hop CD's

----------------------------

and

-----------
By substitution:

Multiply both sides by

and, since

also,

Larry has 36 rock CD's
check:

OK
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