The correct answer - BFairly easy question! Let us solve this one.
PassageFor the same income level (i.e. for household income is the same)
- Rural households have more purchasing power than urban and sub-urban households
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Reason for this: Some of the income used for food and shelter in urban and sub-urban can be used for other purposes in rural homes
Question Inference
PrethinkingAs per the passage,
"Some of the income used for food and shelter in urban and sub-urban can be used for other purposes in rural homes"
This means that
Inference 1: the total amount of money spent on food and shelter is lower in urban and sub-urban households, compared to urban and sub-urban homes.
Total food and housing costs for a household = average costs for these purposes/person * number of people in household
If the money spent on food and shelter is lower in rural, what could cause this?
- It may be because the same food and shelter costs more in urban and sub-urban (e.g. rent being costlier, vegetables and fruits being costlier etc.) - average costs per person being higher
- It may be because the average number of people is higher in urban and sub-urban homes (same costs/prices for above items, but more number of people - average number of people being higher
Inference 2: The average costs of food and shelter per person may be lower for rural than they are for urban and suburban households (maybe, not will be)Inference 3: The average number of people per household may be lower for rural than they are for urban and suburban households (maybe, not will be)
let us now look at options.
Option Choice Analysis(A) The average rural household includes more people than does the average urban or suburban household.
All we know is that it "may be" true that average rural household has lesser people than the average urban or sub-urban household. Even in that case, we cannot be 100% sure. Option A is clearly something that cannot be inferred
(B) Rural households have lower food and housing costs than do either urban or suburban households.Correct. In line with our Inference 1. Rural homes do have lower food and housing costs compared to urban and sub-urban homes
(C) Suburban households generally have more purchasing power than do either rural or urban households.
The passage clearly says that rural households have more purchasing power than suburban households. This option goes against what is given, so incorrect
(D) The median income of urban and suburban households is generally higher than that of rural households.
Out of scope. The passage does not talk about income level, it only compares purchasing power, given the same income level.
(E) All three types of households spend more of their income on food and housing than on all other purchases combined.
Out of scope. The passage gives us no information to make such an inference. For all we know, food and housing may be only a small fraction, and education of children is the heaviest expense/purchase. Essentially, no information about this in the passage makes this a statement which is not inferrable.
Regards,
Harsha