At a celebration, the ratio of the number of men to the number of women was 20 : 7. If 20% of the women left, what percentage of the men must leave so that there will be an equal number of men and women remaining?
|
Men |
Women |
Before |
20 u |
7 u |
Change |
- 14.4 u |
- 1.4 u |
After |
5.6 u |
5.6 u |
Number of women that left
= 20% x 7 u
=
20100 x 7 u
= 1.4 u
Number of women that remained
= 7 u - 1.4 u
= 5.6 u
Number of men that needed to leave = 20 u - 5.6 u= 14.4 u Percentage of men that must leave = 14.420 x 100% = 72% Answer(s): 72%