Question

The length of Ryan's room was decreased by 7ft. The original length was 29ft. What is the percent decrease

Answer 1

$\begin{gathered} Let\text{ the percentage increase by : X} \\ \frac{X}{100}\text{ }\times\text{ 29 = 7} \\ \frac{29X}{100}\text{ = 7} \\ 29X\text{ = 700} \\ X\text{ = }\frac{700}{29}\text{ = 24.1}3\text{ percent decrease.} \end{gathered}$