Each time a bar of soap is used, its volume decreases by 10\%. What is the minimum number of times a new bar would have to be used so that less than one-half its volume remains?
Answer Choices
A. 5
B. 6
C. 7
D. 8
E. 9
Each time a bar of soap is used, its volume decreases by 10\%. What is the minimum number of times a new bar would have to be used so that less than one-half its volume remains?
Answer Choices
A. 5
B. 6
C. 7
D. 8
E. 9