4 men or 5 women can construct a wall in 82 days. How long will it take for 5 men and 4 women to do the same ?

If 4 men or 5 women can construct a will in 82 days, the how long will it take for 5 men and 4 women to do the same work?

3 men or 5 women can do a work in 12 days. How long will 6 men and 5 women take to finish the work?

If 5 men or 8 women can do a piece of work in 12 days, how many days will be taken by 2 men and 4 women to do the same work?

3 men or 5 women can do a work in 12 days. How long will 6 men and 5 women take to do it? (a) 6 days (b) 5 days (c) 4 days (d) 3 days

If 3 men or 4 women can reap a field in 43 days. How long will 7 men and 5 women take to reap it?