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Tutors Answer Your Questions about Travel Word Problems (FREE)
Question 5092: I know that this motion problem involves a system of two equations and I could solve it if I could only figure out how to set it up correctly. I have been using the Distance = Rate x Time formula to try and set it up, but I just can't figure it out and it's driving me nuts! Here's the problem:
"An express train and a local train leave Gray's Lake at 3PM and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train."
Here's what I've tried to do to set this up. I've tried to set up a table so I can see what my equations should be. I'll try to approximate below.
Using the Rate x Time = Distance formula. Let s=The speed the train is traveling and let t=the time that it takes to get to Chicago.
Rate Time Distance
Local s x t =50
Express 2(s)x t-1 =50
The above is as far as I get, but I don't think it's right and thus won't get me to the speed that each train is traveling at.
Help!
Karen Henry
Click here to see answer by rapaljer(3610)  |
Question 5087: Peter drove to work at 40 miles per hour and arrived one minute late. If he had driven at 45 miles per hour, he would have arrived one minute early. How far does Peter drive to work? Please explain and solve.
Click here to see answer by rapaljer(3610)  |
Question 5399: A 5 horsepower pump can empty a pool in 5 hours. A smaller 2 horsepower pump empties the same pool in 8 hours. The pumps are used together to begin emptying this pool. After 2 hours the 2 horsepower pump breaks down. How long will it take the 5 horsepower pump to empty the pool?
Click here to see answer by Abbey(339)  |
Question 5336: How would you solve a word problem using the formula (d=rt)?? An example: in 1.3 hours, a pilot flew a twin-engine propeller plane 403 miles. What was the average speed of the aircraft? a. 310 mph b. 313 mph or c. 303 mph Dont have to have the answer just need the steps to solve the formula. Thanks, Rebecca :)
Click here to see answer by guapa(62)  |
Question 5689: A bicycle club left the campus to ride to a park 24 mi away for an outing. Lynn left from the same place by car with picnic supplies 1 1/2 hr later, taveled at a speed 4 times as fast, and arrived at the parl at the same time as the cyclists. How fast did Lynn drive?
Click here to see answer by prince_abubu(198)  |
Question 5722: A jumbo jet left an airport at the same time as a small private plane that followed the same flight plan during the first hour of its flight. The speed of the jet was 5 times that of the small one, and at the end of the hour it was 500 mi ahead. What was the speed of the larger plane?
Click here to see answer by guapa(62)  |
Question 5750: Two trains were traveling in opposite directions, moving away from one another. One train was moving at 5 miles per hour. The other train was moving at 6 miles per hour. They were 5 miles apart to begin with. After two hours, how far apart were they?
Click here to see answer by guapa(62)  |
Question 5868: Two motorists, one travelling 5 kph faster than the other, leave the same place at the same time and travel in opposite directions. Find the rate of each if they are 195 km apart after 3 hours.
Click here to see answer by Abbey(339)  |
Question 5866: A car starts at 7 AM and travels at 80 kph. Another car starts at 10 AM from the same place and goes in the same direction. How fast will it have to go to catch up with the first one by 4 PM of the same day?
Click here to see answer by Abbey(339)  |
Question 5864: A train traveling at 60 kph covers a given distance in 3 hours. By how many kilometers per hour must its rate be increased so that it will travel the distance in one-half hour less time?
Click here to see answer by Abbey(339)  |
Question 6176: Two cars are 1000 miles apart. They start travelling towards each other at 100 and 200 mph. How far apart will they be 1 hour before they meet.
Thanks.
imazine there are 2 cars
1000m
A ________________________________________________________ B
After 1hr
100m A 700m B 200m
__________________________________________________________
Click here to see answer by ki(6)  |
Question 6314: Your help is greatly appreciated. Here is my problem:
A boy can drive a motorboat 45 miles downstream in the same amount of time that he can drive 27 miles upstream. What is the speed of the current in the river if the speed of the boat in still water is 12 mph
Click here to see answer by AnlytcPhil(958)  |
Question 6491: While traveling with the wind a plane flies 300 miles in 40 minutes. It returns against the wind in 45 minutes. Find the air speed of the plane and the rate of the wind. Use a system of equations to solve the problem
Click here to see answer by srinivas123(23)  |
Question 6682: Two planes start from the same airport and fly in opposite directions. The second plane starts one-half hour after the first plane, but its speed is 50 miles per hour faster. Find the ground speed of each plane if two hours after the first plane starts its flight the planes are 2000 miles apart.
Click here to see answer by prince_abubu(198)  |
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