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- March 18th 2008, 04:10 AM #1
## Mean Help!

**Question:**

The pirce of a CD is denoted by $x. For 60CDs bought in different stores it is found that . Calculate the mean price of these CDs. The mean price of a further 40 CDs is found to be $11.64. The mean price of the 100 CDs.

**Attempt:**

Mean of 100 CDs =

The mean for 60 CDs is correct! but for 100 CDs is wrong. Where did I do wrong?

- March 18th 2008, 04:40 AM #2