Question

In a city 7/20 of the population are women and 1/4 are children. Find the fraction of the

population of men.
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Answer 1

Answer:

1/10

Step-by-step explanation:

Population of women are= 7/20

Population of children are = 1/4

Population of men=

$\frac{7}{20} - \frac{1}{4}$

$\frac{2}{20} \: \: \: (reduce \: the \: fraction \: by \: \: \: 2)$

$= \frac{1}{10}$

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Answer 2

Fractions represent the part of whole(1)

Then

7/20+1/4+x/y=1

7/20+5/20+x/y=1

12/20+x/y=1

X/y=1-12/20

X/y=8/20

X/y=2/5