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spalmer7
01.07.2019 •
Mathematics
Kwan hiked up a hill at 4 km/h and back down at 6 km/h. his total hiking time was 3 hours. how long did the trip up the hill take him?
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Ответ:
Let the time to hike up the hill = t
As given that the total time time up and down is 3 hrs, therefore
The time down the hill = 3-t
The distance up and down is the same.
Distance = speed * time
t=1.8
Hence, time taken to uphill = 1.8 hours
Time taken to down hill = 3-18 = 1.2 hours
Ответ:
Im answering your question bc I need points ty :)