Data Interpretation - Pie Charts - Discussion

Study the following pie-chart and the table and answer the questions based on them.

Proportion of Population of Seven Villages in 1997

Village % Population Below Poverty Line
X38
Y52
Z42
R51
S49
T46
V58

2. 

The ratio of population of village T below poverty line to that of village Z below poverty line in 1997 is:

[A]. 11 : 23
[B]. 13 : 11
[C]. 23 : 11
[D]. 11 : 13

Answer: Option C

Explanation:

Let N be the total population of all the seven villages.

Then, population of village T below poverty line = 46% of (21% of N)

and Population of villages Z below the poverty line = 42% of (11% of N)

Therefore Required ratio = 46% of (21% of N) = 46 x 21 = 23/11.
42% of (11 % of N) 42 x 11


Praveen said: (Jan 10, 2011)  
How this possible explain briefly please?

Ravi said: (Dec 11, 2011)  
@Praveen

The total population has to consider for calculating the ratios.. And so 46*21 / 42*11 would give u the answer 23:11

Divya said: (Jun 3, 2014)  
How 46*21 and 42*11 came. What values are 21 and 11?

Gupreet Kaur said: (Jul 1, 2014)  
What value are 21 and 11? how this arranged? please any one explain me.

Mantu Kumar Deka said: (May 19, 2015)  
Don't know how the value of 21 and 11 came? Any one can help on this?

Phub said: (Jul 12, 2015)  
The value of 21 and 11 is the value of t and z from the above pie chart.

Sushmitha said: (Apr 27, 2018)  
Why they have taken N in this problem?

Ravindhiran said: (Jul 26, 2018)  
T = 21% ( in 21% of population 46% people are below powerty line).
Z= 11 % ( in 11% of T population, 42% people are below P line).
= 46% of 21/42% of 11.
= 46*21/42*11.
= 23/11.

Dorji said: (Sep 22, 2018)  
Could not get the concept. Anyone help me by explaining it.

Divyavishnu said: (Dec 17, 2018)  
Anyone help me by explaining it.

Namgay Zangpo said: (Jun 30, 2019)  
46*21=966/42*11=462.

But how are we getting answer 23/11?

Tshering Yangchen said: (Sep 20, 2020)  
Can anyone help me to solve this question?

Kezang said: (Oct 5, 2020)  
42 * 23 = 966.
42 * 11 = 462.

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