Writing an Equation from a Word Problem : 'Separately and Both Together' Problem
Not what you're looking for?
With only the small valve open, all of the liquid can be drained from a large vat in 4 hours. With only the large valve open, all of the liquid can be drained in 2 hours. How long would it take to drain the vat with both valves open?
Purchase this Solution
Solution Summary
A 'Separately and Both Together' problem is solved, and the general formula of this problem type is discussed.
Solution Preview
Let x be the amount of liquid in the vat.
The small valve drains all of the liquid in 4 hours; therefor the rate of flow from the small valve is x/4 per ...
Purchase this Solution
Free BrainMass Quizzes
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
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.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
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.