A public opinion survey explored the relationship between age and support for increasing the minimum wage. The results are summarized in the two-way table.
For Against No opinion Total
$21 - 40$ $25$ $20$ $5$ $50$
$41 - 60$ $20$ $35$ $20$ $75$
Over $60$ $55$ $15$ $5$ $75$
Total $100$ $70$ $30$ $200$
In the $21$ to $40$ age group, what percentage supports increasing the minimum wage?

12.5 %

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20 %

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25 %

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50 %

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Solution

The correct option is D $50 %$
Total number of individuals in the age group $(21 - 40)$ $= 50$
Number of Individuals supporting the increase of minimum wage $= 25$
So percentage of individuals supporting increase of minimum wage $= \frac{25}{50} \times 100 = 50 %$
Option $D$ is correct.

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800

Wages ( in hundreds)	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$	$50 - 55$	$55 - 60$
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Age in Years (Greater than or equal to)	No. of persons
$0$	$100$
$10$	$90$
$20$	$75$
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$40$	$25$
$50$	$15$
$60$	$5$
$70$	$0$

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