SOLUTION: jane traveled for 2 hrs at a rate of 70 kilometers per hr and for 5 hrs at a rate of 60 kilometers per hr. What was her average speed for the 7-hr time peroid?

Question 658653: jane traveled for 2 hrs at a rate of 70 kilometers per hr and for 5 hrs at a rate of 60 kilometers per hr. What was her average speed for the 7-hr time peroid?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
EXAMINATION has letters, and in which '', '' and '', all occur twice. , would have been fine if all letters were distinct.
So, we have,, , , , (), (), ()... distinct letters.
1. letters selected, which are distinct:
2. letters alike, and distinct (eg: ) =
3. letters alike, and letters alike (eg: ) =
So answer is,.

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