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Question

Suppose the wage of an industrial worker follows a path given by S =x2 and inflation rate during the same time is given by I=ex where x is the time in months. What can you say about his standard of living provided all other factors remain constant? Give reasons behind your observations.


A

His standard of living will improve with the increase in real wage

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B

His standard of living will remain the same with no change in his real wage

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C

His standard of living will deteriorate with decrease in real wage

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D

It cannot be determined

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Solution

The correct option is C

His standard of living will deteriorate with decrease in real wage


Let us consider a function f(x)=exx2. Differentiating f(x) with respect to x, we get f(x)=ex2x>0 for x0 which means f(x) is a strictly increasing function for x0 i.e. f(x)>0ex>x2. Hence, the worker’s standard of living will never be able to catch up with inflation. In other words, he won’t be able to maintain his standard of living.


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