Question 10.1 . Two persons could fit new windows in a house in 3 days. One of the persons fell ill before the work started. How long would the job take now?
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Solution
Let the number of days be x.
Persons21Days3x Here, the number of persons and the number of days are in inverse proportion. ∴21=x3⇒x×1=2×3⇒x=2×31=6days