Question

# A contractor estimates that $3$ persons could rewire Jasminder’s house in $4$ days. If, he uses $4$ persons instead of three, how long should they take to complete the job?

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Solution

## Find the number of days required to rewire a house in given condition.Given: $3$ persons can rewire a house in $4$ days.So, $1$ person will rewire the same house in $=3×4$ $⇒$ $=12$ days.Thus, $4$ persons will rewire the house in $=\frac{12}{4}$$⇒$ $=3$ days.Hence, $4$ persons will take $3$ days to complete the job.

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