When a towel was bleached, it lost 20% of its length and 10% of its width. The area decreases by the following percentage:
A. 10%
B. 10.08%
C. 20%
D. 28%
Answer:D
When a towel was bleached, it lost 20% of its length and 10% of its width. The area decreases by the following percentage:
A. 10% B. 10.08% C. 20% D. 28%
Explanation: Let's say the original length is x and the original width is y.Area reduction = xy - 80/100 x x 90/100 y= xy - 18/25 xy = 7/25 xy.Reduced percent = 7/25 xy x 1/xy x 100 percent = 28 percent.