SSC CPO SI and ASI Model Paper 3

(1) Three days’ work of Chinku =One day work of (Tinku + Minku)
Four days’ work of Chinku = Oneday work of (Tinku + Minku +Chinku) =$\frac{1}{8}$
One day work of Chinku =$\frac{1}{8\times 4}=\frac{1}{32}$
Four days’ work of Tinku = One daywork of (Chinku + Minku)
Five days’ work of Tinku = One daywork of (Chinku + Minku + Tinku)
$=\frac{1}{8}$
One day work of Tinku =$\frac{1}{8\times 5}=\frac{1}{40}$
One day work of Minku $=\frac{1}{8}-\frac{1}{40}-\frac{1}{32}=\frac{11}{160}$
Time taken to complete the work byMinku alone =$\frac{160}{11}=14\frac{6}{11}$days.