We know that
the number
is equal to
and
is equal to
divide by 5 both members
therefore
the number is equal to 
the number
is equal to
and
divide by 5 both members
therefore
the number
Last year, there were 120 students in the marching band. This year, there are 138.
2 answers:
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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