SOLUTION: 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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Question 1210627: 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

Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(53879)   (Show Source): You can put this solution on YOUR website!
.
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. 


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  

     =   hours = 6 times 12 minutes = 1 hour and 12 minutes.    ANSWER

Solved completely.



Answer by josgarithmetic(39823)   (Show Source): You can put this solution on YOUR website!
             RATE              TIME hours     CONES eaten

ONE TEEN    36/3=12              3              36

FRIEND      36/2=18              2              36

COMBINED    12+18=30           36/30=1.2          36

How long for both to eat 36 cones?
1 hour 12 minutes
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