Question

If 4 men or 6 women can do a work in 20 days, how long will 12 men and 2 women take to do the whole work? (a) 6 days (b). 7 days (c) 8 days (d) None​

Answer 1

Answer:

Step-by-step explanation:

Let m and n be the fraction work that could be done by a man and woman per day respectively.

4 m = 6 w= (1/20)

m = 1/80 and w = 1/120

If N is the days to finish the work by 6 men and 11 women ,

6m + 11w = (1/ N)

6/80 + 11/120 = (1/ N)

1/ 6.024 = (1/ N)

N = 6.024 days.