These questions are based on the table below presenting data on percentage population covered by drinking water and sanitation facilities in selected Asian countries.
Country A is said to dominate B or A > B if A has higher percentage in total coverage for both drinking water and sanitation facilities, and, B is said to be dominated by A, or B < A. A country is said to be on the coverage frontier if no other country dominates it. Similarly, a country is not on the coverage frontier if it is dominated by at least one other country.Â
Using only the data presented under Sanitation facilities columns, it can be concluded that rural population in India, as a percentage of its total population is approximately
Let total rural population in India be R and urban population in India be U.
Total population in India = T = U + R
Based on the sanitation facilities table,Â
$$\frac{70}{100}$$ U +Â $$\frac{14}{100}$$ R =Â $$\frac{29}{100}$$(U + R)
Solving, we get
$$\frac{U}{R}$$ =Â $$\frac{15}{41}$$
U : R = 15 : 41
Rural population % =Â $$\frac{41}{15+41}\times\ 100$$ =Â $$\frac{41}{56}\times\ 100$$ = 73.2%
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