10 women can do a piece of work in six days. Men can do it in 10 days. What is the ratio of the efficiency of a woman a man respectively
10 women complete the work in 6 days, so the total work is
10w × 6 = 60w
One man completes the same work in 10 days, so the total work is
m × 10 = 10m
Total work = 60 w = 10 m
6 w = m
1:6