Algebra - Rational Equations
Not what you're looking for?
1. The speed of train A is 10 mph slower than the speed of train B. Train A travels 230 miles in the same time it takes train B to travel 280 miles. Find the speed of each train.
2. The Office Jet printer can copy Maria's dissertation in 8 min. The Laser Jet printer can copy the same documents in 22 min. If the two machines work together, how long would they take to copy the dissertation?
3. Simplify by removing factors of 1
4. To determine the number of deer in a game preserve, a conservationist catches 408 deer, tags them and lets them loose. Later, 576 deer are caught; 192 of them are tagged. How many deer are in the preserve?
5. Find all numbers for which the rational expression is undefined.
6. Add. Simplify if possible
7. Simplify by removing factors of 1
8. Multiply and simplify
9. Simplify by removing factors of 1
10. Solve.
[See the attached questions file.]
Purchase this Solution
Solution Summary
The expert examines algebra word problems. Neat, step-wise solutions are provided.
Solution Preview
The solution file is attached.
1. The speed of train A is 10 mph slower than the speed of train B. Train A travels 230 miles in the same time it takes train B to travel 280 miles. Find the speed of each train.
Let the speed of B be x miph. Then the speed of A is x - 10 miph.
Time of travel for train A = distance/speed = 230/(x- 10)
Time of travel for B = 280/x
By data, 230/(x - 10) = 280/x
230x = 280(x - 10)
230x = 280x - 2800
50x = 2800
x = 2800/50 = 56 miph (Train B) and 56 - 10 = 46 miph (Train A).
2. The Office ...
Purchase this Solution
Free BrainMass Quizzes
Probability Quiz
Some questions on probability
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.