SOLUTION: A ship must average 22 knots to make it's 10hr run on schedule. During the first 4 hrs bad weather caused it to reduce speed to 16 knots, what should it's average speed be for the

Question 375192: A ship must average 22 knots to make it's 10hr run on schedule. During the first 4 hrs bad weather caused it to reduce speed to 16 knots, what should it's average speed be for the rest of the trip to maintain its schedule?
Found 2 solutions by corncob, mananth:
Answer by corncob(8) (Show Source): You can put this solution on YOUR website!
To do this problem you will have to first start out, finding ho far the ship must travel in all. To do this, you will first have to multiply the 22 knots times 10 hours. Doing this you get 220 knots total.
.
.
Then you will have to find out how far the ship traveled in the first 4 hours. to do this part, you will multiply 16*4 and get 64 knots.
.
.
Then you will subract 64 from 220--
220-64=156
.
.
With this you have 6 hours left on the journey to get to the location on time. Thus, you will divide 156 by 6 to get the average speed the ship will need to maintain to stay on schedule
This would be
156/6=23
.
.
Now, the answer is 23 knotts per hour!
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Average for the trip = 22 knots/h
time = 10 hours
distance = 10*22=220 miles.
...
First 4 hours
rate = 16 knots/h
distance = 64 miles.
..
distance to cover in balance 6 hours = 220-64
=156 miles
..
time = 6 hours
..
rate = d/t
rate = 156/6
rate = 26 knots/h
This should be the speed to be on time.
...
m.ananth@hotmail.ca
RELATED QUESTIONS
A ship must average 22 knots (nautical miles per hour) to make its 10-hour run on... (answered by funmath,checkley71)
A ship must average 22 miles per hour to make its ten hour run on schedule. During the... (answered by checkley71)
A ship must average 22 mph to make its 10 hour run on scheldule. During the first ____... (answered by AnlytcPhil)
A doctor drove 200 miles to attend a conference. Bad weather on the return trip caused... (answered by jorel1380)
A ship tales 4 weeks at 12 knots to go one way. What is the distance the ship will travel (answered by Alan3354)
During a cruise, Mike wants to maintain his exercise schedule. He learns that on the... (answered by josmiceli)
a freight train makes a regular run of 1300km according to its schedule. the train... (answered by mananth)
A Coast Guard ship made a trip to NYC and back. The trip there took 3 hours and the... (answered by josmiceli)
A ship travels between two ports. The cost of fuel depends on its speed as follows: (answered by josmiceli)