9 women can complete a piece of work in 19 days. How many days will 18 women take to complete the same piece of work ?
As 9 women takes 19 days to complete a piece of work , then let say that 18 women will take a days to complete the same work.
using $$\frac{M1D1}{W1}=\frac{M2D2}{W2}$$
$$\frac{9\times19}{W}=\frac{18D2}{W}$$
Days required = 9.5 days
Hence option E is correct
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