SOLUTION: Danny traveled 24 mils at 16 mph and 20 miles at 12 mph. Find the average rate

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Question 1150653: Danny traveled 24 mils at 16 mph and 20 miles at 12 mph. Find the average rate
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Total Distance divided by Total Time

%2824%2B20%29%2F%2824%2F16%2B20%2F12%29miles%2Fhour

Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.

The average rate is the total distance divided by the total time.


Total time is  24%2F16 + 20%2F12 = %283%2A24%29%2F48 + %284%2A20%29%2F48 = %2872%2B80%29%2F48 = 152%2F48 = 19%2F6  hours.


The average rate = %2824%2B20%29%2F%28%2819%2F6%29%29 = 44%2F%28%2819%2F6%29%29 = %2844%2A6%29%2F19 = 264%2F19 = 1317%2F19  miles per hour.


Very ugly numbers;  I don't know who created this problems,  which excellent educational ideas
does he (or she) keep in his mind and what you can learn making such calculations.