Chapter 8.4, Problem 67MR

To determine

To find: the percentage change for 12 lb to 15 lb.

Answer to Problem 67MR

The percentage change is $25\%$ increase.

Explanation of Solution

Given:

The change is 12 lb to 15 lb.

Calculation:

The change is increases as the final (15 lb) is more than initial (12 lb).

The percentage increment is calculated as follows:

  $\begin{array}{l}\Rightarrow \frac{\text{Final}-\text{Initial}}{\text{Initial}}\times 100\\ \Rightarrow \frac{15-12}{12}\times 100\\ \Rightarrow 25\%\end{array}$

Negative sign is for decrement and positive sign is for increment.

Thus, the percentage change is $25\%$ increase.