A roller coaster can take 162 passengers around the track in nine minutes. The roller coaster operates at a constant rate.
1 answer:
Answer:
<u>18</u> passengers the roller coaster can take around the track per minute.
Step-by-step explanation:
Given:
A roller coaster can take 162 passengers around the track in nine minutes. The roller coaster operates at a constant rate.
Now, to find the number of passengers roller coaster take around the track per minute.
As given in 9 minutes the roller coaster track 162 passengers.
So, we solve by using unitary method:
In 9 minutes the roller coaster take passengers = 162.
Thus, in 1 minute it can take
Therefore, 18 passengers the roller coaster can take around the track per minute.
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Answer:
It will take 6 hours for the new pump to drain the pool.
Step-by-step explanation:
As the complete question is not given, the complete question is found online and is attached herewith
Let the rate of new pump is given as x=W/t_1
Let the rate of the old pump is given as y=W/t_2
it is given that the time t_2=2t_1
So by substituting the values of t_2 in the rate equation of y
y=W/2t_1
y=(W/t_1*2)=x/2
Also the total rate of both the pumps is given as W/t3 where t3 is given as 4 hours so the equation becomes
x+y=W/4
x+x/2=W/4
3x/2=W/4
As x=W/t_1
3W/2t_1=W/4
Now as W is same on both sides so
3/2t_1=1/4
12=2t_1
t_1=6 hours
So it will take 6 hours for the new pump to drain the pool.
