Bunuel wrote:
If 70% of the women in a room are over 50 years old and 80% of the people in the room are women, what is the ratio of the number of women 50 years old or less to the number men in the room?
A. 3 : 7
B. 4 : 1
C. 6 : 5
D. 7 : 10
E. 14 : 5
Say, Total people in the room = 100
80% are women = 80 women (Given)
So, men = 100 - 80 = 20 men
70% of the women in a room are over 50 years old = 80*70/100 = 56 women
Therefore, no. of women <=50 years = 80 - 56 = 24
the ratio of the number of women 50 years old or less to the number men in the room = 24:20
Answer = 6:5 (C)
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