Chapter 19: Problem 11
A car traveled from Town \(A\) to Town \(B\). The car traveled the first \(\frac{3}{8}\) of the distance from Town \(A\) to Town \(B\) at an average speed of \(x\) miles per hour, where \(x>0 .\) The car traveled the remaining distance at an average speed of \(y\) miles per hour, where \(y>0 .\) The car traveled the entire distance from Town \(A\) to Town \(B\) at an average speed of \(z\) miles per hour. Which of the following equations gives \(y\) in terms of \(x\) and \(z ?\) a. \(y=\frac{3 x+5 z}{8}\) b. \(y=\frac{5 x z}{8 x+3 z}\) c. \(y=\frac{8 x-3 z}{5 x z}\) d. \(y=\frac{3 x z}{8 x-5 z}\) e. \(y=\frac{5 x z}{8 x-3 z}\)
Short Answer
Step by step solution
Key Concepts
These are the key concepts you need to understand to accurately answer the question.