1.The mean price of 5 items is $7.00. The prices of the first four items are $6.50, $8.00, $5.50 and $6.00. How much does the fifth item cost?

Sum of prices of 5 items=number of items*mean=5*7=35
Sum of prices of first four items=(6.50+8.00+5.50+6.00)= 26.00
Price of fifth item=sum of prices of 5 items-sum of prices of 4 items=35-26=$9

2. The range of a set of numbers ...

Solution Summary

There are 6 basic problems. Solution provides formula and methodology to find the answer in each case.

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