A boy ran from his house to the supermarket at an
average speed of 6 KM per hour and returned along
the same route at an average speed of 4 KM per
hour. If the total time it took him to run to the
supermarket and back was ninety minutes, how
many minutes did it take him to run from the
supermarket to her house?
B) 54
C)45
D) None of these
A) 36
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Answer:
it took 36 min for him to reach home from supermarket
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