RRB Group D 2-Nov-2014 Shift 2 Solved Paper

5 men can do a piece of work in 19 days.
1 man’s 1 day’s work = 1/(5 × 19)
= 1/95 3 men’s 1 day’s work = 3/(5 × 19) = 3/95
9 women can do a piece of work in 19 days
1 woman’s 1 day’s work =1/(9 × 19) = 1/171
6 women’s 1 day’s work =6/(9 × 19) = 6/171 = 2/57
Number of days required by 3 men and 6 women to complete the work:
$=\frac{1}{\frac{2}{57}+\frac{3}{95}}$
$=\frac{19\times 15}{10+9}$
Number of days