Answer:
(i) Let the job would take x day. We have the following table.
Clearly, more the number of persons, lesser would be the number of days to do the job. So, the number of persons and number of days vary in inverse proportion. So, \[2\ \times 3=1\times x\] \[\Rightarrow \] \[x=6\] Thus, the job would now take 6 days. (ii) Let \[x\] persons be needed. We have the following table. Number of persons 2 \[2-1=1\] Number of days 3 \[x\]
Clearly, more the number of persons, lesser would be the number of days to do the job. So, the number of persons and number of days vary in inverse proportion. So, \[3\times 2=1\times x\] \[\Rightarrow \] \[x=6\] Thus, 6 persons would be needed. Number of days 3 1 Number of person 2 \[x\]
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