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In a certain village, the ratio of adult men to adult women is 3 ∶ 5 and the ratio of adult women and children is 2 ∶ 7. What is the ratio of adults (men and women) and children?
A- 10 : 7
B- 7 : 10
C- 2 : 5
D- 16 : 35
E- 6 : 15
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The correct answer is D.
The ratio of men to women is 3 to 5 and the ratio of women to children is 2 to 7. First, let’s find the ratio of men to women to children. The ratio of 3 to 5 equals the ratio of 6 to 10. The ratio of 2 to 7 is the same as the ratio of 10 to 35.
Therefore, the ratio of men to women to children is 6: 10: 35.
Now, you can find the ratio of men and women to children.
6 + 10 to 35 or 16: 35.