Dog II

Journey from a rangers' home to the town is 6 km. Mr. ranger started from his home and went 3 km per hour. His women came from the town and also went 3 km per hour. With ranger started dog and runs in 12 km in 1 hour. The dog went to ranger's women then back to ranger and running from one to the one until the two meet.

How many miles will pass a dog?

Result

x =  12 km

Solution:

$t = \dfrac{ 8 \ km }{ 3 \ km/h + 3 \ km/h } = 1 \ hod \ \\ x = v t = 12 \ km/h \cdot 1 \ h = 12 \ \text{ km }$

Try another example

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:

Be the first to comment!

Next similar math problems:

1. Pedestrian
   Dana started at 10:00 from the point A to point B. These points are distant 12 km. Determine how fast Daniel went when the place B arrived at 11:54. Speed express in km/h.
2. Two cars 2
   Two cars started from two positions 87 km distant at the same time in opposite directions at speeds 81 km/h and 75 km/h. What was the distance between them after 2 hours 50 minutes of driving.
3. Constant motion
   The car has undergone constant motion 120 km in 1 hour 30 minutes. Determine its average speed. Determine how long car drove in the first 20 minutes and 50 minutes from the start of the move.
4. Aircraft
   Flight length 3457 km took 5 hours. The airport passengers had to arrive hours in advance, 2 hours. Departure was delayed for 6.4 hours. The destination airport formalities took 0.4 hours. Calculate the average speed of passenger travel from arrival to l
5. Bus 14
   Boatesville is 65.35 kilometers from Stanton. A bus traveling from Stanton is 24.13 kilometers from Boatesville. How far has the bus traveled?
6. The cyclist
   The cyclist drove from A to B, 60 km away. The first half drove at 30km/h, the second at 20km/h. How long did it take for him?
7. One and a half chicken
   One and a half chicken bears one and a half egg in one and a half day. How many eggs can withstand from 6 chicken in 6 days?
8. Train and walker
   Walker passes an hour 5 km. Express train per hour 100 km. Walker went 4 hours. How many minutes took the distance express train?
9. Average speed
   Michal went out of the house by car at speed 98 km/h. He came into the goal place for 270 minutes. Determine the distance between the two places.
10. Cyclist 9
    A cyclist travels at a a speed of 4.25 km per hour. At that rate, how far can he travel in 3.75 hours?
11. Cyclist and car
    A cyclist who runs at a speed of 20km per hour will arrive at the finish in 4.5 hours. How fast does the car have to drive the same route in 2 hours?
12. Doug biked
    Doug biked 5 1/4 miles in 3/4 of an hour. What is his average speed?
13. Two vans
    At 8:30 a. M. , two vans leave at a parking area. They travel in opposite directions: one van travels at 48 km/h and the other at 62 km/h. At what time will the cars be 550 km apart?
14. Chase
    Paul travel at 60 km/h. After 18 km ride found that he forgot an important book. His brother Thomas behind him carrying it. How fast must Thomas go to catch up with Paul in 31 minutes?
15. Knight
    Knight passed 13 km long track in 26 minutes, what was his average speed?
16. Thunderstorm
    The sound travels 1 km in about 3 seconds. How far is the storm if there is a time interval of 8 seconds between lightning and thunder?
17. Bob traveled
    Bob traveled 20 meters to Dave's house. He arrived in 3 minutes. What was his average speed for the trip.