7. four feet are cut from a 12-foot board. what is the percent decrease in length?
7. four feet are cut from a 12-foot board. what is the percent decrease in length?
Answer
Explanation:
Step1: Identify values for calculation
Original length $L_o = 12$ ft, Decrease in length $L_d = 4$ ft
Step2: Calculate percent decrease
Percent decrease = $\frac{L_d}{L_o} \times 100%$ $\frac{4}{12} \times 100% = \frac{1}{3} \times 100% \approx 33.33%$
Answer:
The percent decrease in length is approximately $33.33%$ (or exactly $\frac{100}{3}%$)