The cruise ship
The cruise ship has a speed of 12 km / h at a calm surface. When we sail 45 km along the river and 45 km back, it took us exactly 8 hours. Which (constant) speed of flow of the river?
Thank you for submitting an example text correction or rephasing. We will review the example in a short time and work on the publish it.
Showing 0 comments:
Tips to related online calculators
You need to know the following knowledge to solve this word math problem:
Next similar math problems:
- Tourist Jirka
Distance between the points A and B is 13.5 km. Jirka went from point A to point B unknown speed and for an unknown period of time. Back to the point A went slower by 3 km/h which means that went 20 minutes more. How long Jirka took the return journey?
- Wind drift
The plane flies at 860 km/h, passing distance 3000 kilometers with the wind and once again against the wind for 6 h 59 min. What is the wind speed?
- Two planes
Two planes flying from airports A and B, 420 km distant against each other. Plane from A took off 15 minutes later and flies at an average speed of 40 km/h higher than the plane from B. Determine the average speed of this two aircraft if you know that it
- Speed of car
The car went to a city that was 240 km away. If his speed increased by 8 km/h, it would reach the finish one hour earlier. Determine its original speed.
- Two trucks
Two trucks left cities A and B against each other and met after an hour. The first car came to B 27 minutes later than the second car to A. Calculate the car speed if the distance between cities A, B is 90 km.
- Equation 23
Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
- Solve 3
Solve quadratic equation: (6n+1) (4n-1) = 3n2
- Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
Determine the discriminant of the equation: ?
- Quadratic equation
Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
- Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
- Roots and coefficient
In the equation 2x ^ 2 + bx-9 = 0 is one root x1 = -3/2. Determine the second root and the coefficient b.
- Solve equation
solve equation: ?
- Reciprocal value
How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
Find variable P: PP plus P x P plus P = 160