Question

to calculate the percentage change in weight of the potato cylinders, you will do which of the following?
a) multiply the weight change by 100
b) multiply the initial weight by the final weight
c) divide the initial weight by the final weight
d) divide the weight change by the initial weight

Explanation:

Step1: Recall percentage - change formula

The formula for percentage change is $\text{Percentage change}=\frac{\text{Change in quantity}}{\text{Initial quantity}}\times100$. In the case of the weight of potato - cylinders, the change in weight is the difference between the final and initial weights, and to find the percentage change, we first divide the weight change by the initial weight and then multiply by 100. But the first step in the process of calculating the percentage change (before multiplying by 100) is to divide the weight change by the initial weight.

Answer:

D. divide the weight change by the initial weight