Question 1210627
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one teen eats cones at the rate of 36 in 3 hours. her friend can eat the same number in 2 hours. 
how long will it take together to eat 36 cones
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It is very simple arithmetic problem of the level for 4-th grade students.



<pre>
First person's rate is 36/3 = 12 cones per hour.


Her friend's rate is 36/2 = 18 cones per hour.


Their combined rate is  12 + 18 = 30 cones per hour. 


The time for both to eat 36 cones is this ratio  

    {{{36/30}}} = {{{6/5}}}  hours = 6 times 12 minutes = 1 hour and 12 minutes.    <U>ANSWER</U>
</pre>

Solved completely.