Chapter 11.7, Problem 5CYU

(a)

To determine

To find: the speed in miles per hour

Answer to Problem 5CYU

The expression is $\frac{2\frac{1}{2}mi}{\frac{1}{3}hr}$

Explanation of Solution

Given:

R rowed a canoe $2\frac{1}{2}$ miles in $\frac{1}{3}$ hour

Calculation:

The expression is written the speed in miles per hour is as follows:

  $\frac{2\frac{1}{2}mi}{\frac{1}{3}hr}$

Conclusion:

Hence, the expression is $\frac{2\frac{1}{2}mi}{\frac{1}{3}hr}$

(b)

To determine

To find: the average speed

Answer to Problem 5CYU

The average speed is $\frac{15}{2}$

Explanation of Solution

Calculation:

The average speed is calculated below:

  $\frac{2\frac{1}{2}}{\frac{1}{3}}$

  $=2\frac{1}{2}·3$

  $=\frac{5}{2}·3$

  $=\frac{15}{2}$

Conclusion:

Hence, the average speed is $\frac{15}{2}$