Exercise :: Pie Charts  Pie Chart 7
Study the following piechart and the table and answer the questions based on them.
Proportion of Population of Seven Villages in 1997
Village  % Population Below Poverty Line 
X  38 
Y  52 
Z  42 
R  51 
S  49 
T  46 
V  58 
1.  If the population of village R in 1997 is 32000, then what will be the population of village Y below poverty line in that year? 

Answer: Option B Explanation: Population of village R = 32000 (given). Let the population of village Y be y.
Population of village Y below poverty line = 52% of 30000 = 15600. 
2.  The ratio of population of village T below poverty line to that of village Z below poverty line in 1997 is: 

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)

3.  Find the population of village S if the population of village X below poverty line in 1997 is 12160. 

Answer: Option C Explanation: Let the population of village X be x.
Now, if s be the population of village S, then

4.  If in 1998, the population of villages Y and V increase by 10% each and the percentage of population below poverty line remains unchanged for all the villages, then find the population of village V below poverty line in 1998, given that the population of village Y in 1997 was 30000. 

Answer: Option B Explanation: Population of village Y in 1997 = 30000 (given). Let the population of village V in 1997 be v.
Now, population of village V in 1998 = 20000 + (10% of 20000) = 22000. Population of village V below poverty line in 1998 = 58% of 22000 = 12760. 